WO2012124422A1 - 録音装置 - Google Patents
録音装置 Download PDFInfo
- Publication number
- WO2012124422A1 WO2012124422A1 PCT/JP2012/053406 JP2012053406W WO2012124422A1 WO 2012124422 A1 WO2012124422 A1 WO 2012124422A1 JP 2012053406 W JP2012053406 W JP 2012053406W WO 2012124422 A1 WO2012124422 A1 WO 2012124422A1
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- WIPO (PCT)
- Prior art keywords
- microphone
- casing
- recording
- sensor
- microphones
- Prior art date
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R1/00—Details of transducers, loudspeakers or microphones
- H04R1/08—Mouthpieces; Microphones; Attachments therefor
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R5/00—Stereophonic arrangements
- H04R5/027—Spatial or constructional arrangements of microphones, e.g. in dummy heads
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R2410/00—Microphones
- H04R2410/05—Noise reduction with a separate noise microphone
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04S—STEREOPHONIC SYSTEMS
- H04S2400/00—Details of stereophonic systems covered by H04S but not provided for in its groups
- H04S2400/15—Aspects of sound capture and related signal processing for recording or reproduction
Definitions
- the present invention relates to a recording apparatus having a plurality of microphones.
- Patent Document 1 Japanese Patent Laid-Open No. 2001-296343
- the imaging apparatus includes two microphone sets provided in each of a first casing and a second casing that are arranged in a vertical direction via a rotating unit.
- the microphone set can be moved and controlled so that the directivity direction of the microphone set provided in the first housing is correctly directed to a sound source such as a speaker.
- the microphone set provided in the second housing cannot be controlled for movement.
- the user has to perform complicated operations for setting the microphones for recording. Also, the degree of freedom of setting was low.
- the present invention solves the above-described problems, and one of the objects of the present invention is to provide a recording apparatus that can set a recording form desired by a user with a more intuitive operation.
- each of the first housing and the second housing which are arranged in the vertical direction and at least one of which is rotatably supported, and each of the first housing and the second housing.
- a predetermined recording mode is set according to a plurality of microphones including at least a first microphone and a second microphone, and a relative position between the first microphone and the second microphone, and the recording mode is set.
- a control unit that activates a recording function.
- the recording mode desired by the user can be set more intuitively. .
- the plurality of microphones are paired with the third microphone provided in the first housing in a diagonal direction with respect to the first microphone and the second microphone with respect to the second microphone.
- a fourth microphone provided in the angular direction, wherein the first housing and the third microphone and the second microphone and the fourth microphone are positioned so as to overlap each other in the vertical direction.
- the directivity for sound collection is changed by rotating the first housing or / and the second housing, the directivity desired by the user can be more easily achieved. be able to.
- the first microphone is disposed in the vicinity of the side surface of the first housing, and the recording device is provided on the top surface of the first housing and in the vicinity of the first microphone. 1 sensor, and when the detection by the first sensor is performed, the control unit turns off the microphone located diagonally to the first microphone, or based on the audio signal output from the microphone. The function of reducing noise included in the audio signal output from the first microphone is activated.
- a user can designate a sensor and use a microphone in a diagonal direction of the detected sensor to reduce noise, so that a voice signal from a desired microphone is further cleared. Can listen to.
- the recording device further includes a third sensor and a fourth sensor provided on the top surface of the first housing, and the third sensor and the fourth sensor are in the first housing.
- the detection is performed by the third sensor provided on the second diagonal line
- the control unit turns off the microphone located in the diagonal direction with respect to the microphone located in the vicinity of the third sensor, or from the microphone located in the vicinity of the third sensor based on the audio signal output from the microphone.
- the control unit is arranged diagonally with respect to the microphone located in the vicinity of the fourth sensor. Turn off the microphone for location, or based on an audio signal outputted from the microphone, to enable the function of reducing the noise contained in the audio signal outputted from the microphone located in the vicinity of the fourth sensor.
- the recording device further includes a light emitting unit that is provided on the top surface of the first housing and indicates a state of a plurality of microphones.
- the recording apparatus further includes a speaker that is provided on the top surface of the first housing and outputs a sound recorded near the rotation axis.
- the recording form desired by the user can be set by a more intuitive operation.
- FIG. 1 is a perspective view of an IC recorder according to an embodiment of the present invention. It is another perspective view of the IC recorder which concerns on one Example of this invention. It is another perspective view of the IC recorder which concerns on one Example of this invention. It is an external view which shows a part of external appearance of the IC recorder which concerns on one Example of this invention. It is a circuit diagram which shows a part of circuit of the IC recorder which concerns on one Example of this invention. It is the figure which showed a part of table which the IC recorder which concerns on one Example of this invention hold
- the audio recording apparatus of the present invention is realized as an IC (Integrated Circuit) recorder.
- IC Integrated Circuit
- FIG. 1 and 3 are perspective views of an IC recorder (1) according to an embodiment of the present invention viewed from the direction of arrow A
- FIG. 2 is a perspective view of the IC recorder (1) viewed from the direction of arrow B
- FIG. 4 is a perspective view of the IC recorder (1) as viewed from above.
- the IC recorder (1) includes a first casing (2) and a second casing (3).
- the first casing (2) and the second casing (3) are arranged so as to be vertically stacked via the intermediate member (8).
- the first casing (1) is disposed on the second casing (3).
- the first casing (2) and the second casing (3) are each a cylindrical casing.
- a microphone (4) and a microphone (6) are installed so as to be positioned.
- the microphone is connected to the outside of the casing through the outer peripheral side surface of the second casing (3) and positioned on the diameter line (53) passing through the center of the second casing (3).
- (5) and a microphone (7) are installed.
- the diameter line (52) corresponds to a diagonal line connecting the microphone (4) and the microphone (6).
- the diameter line (53) corresponds to a diagonal line connecting the microphone (5) and the microphone (7).
- the first casing (2) can be rotated 90 degrees counterclockwise about the central axis (51) of the first casing (2).
- the microphone (4) and the microphone (5) are positioned in the vertical direction (perpendicular to the top surface (9) of the first housing (2)). It is defined as the first state.
- a state where the relative position between the microphone (4) and the microphone (5) is 90 degrees as shown in FIG. 3 is defined as a second state. In the first state, the diameter line (52) and the diameter line (53) overlap. In the second state, the diameter line (52) is orthogonal to the diameter line (53).
- the second casing (3) may be rotatable, and the first casing (2) and Both of the second housings (3) may be rotatable.
- the second casing (3) rotates clockwise with the central axis (51) of the second casing (3) as the rotation axis.
- the intermediate member (8) is provided with a first stopper (not shown) and a second stopper (not shown).
- the first stopper prohibits the clockwise rotation with respect to the first housing (2) in the first state shown in FIGS.
- the second stopper prohibits counterclockwise rotation with respect to the first housing (2) in the second state shown in FIG. That is, the first housing (2) is configured such that the relative angle with respect to the second housing (3) does not rotate 90 degrees or more.
- LED Light Emitting Diode
- touch sensors 10 (20) (30) (40)
- playback buttons 42
- recording A button 434
- stop button 436
- a speaker 336 is disposed near the center of the first casing (2) so as to communicate with the outside of the casing through the top surface (9).
- the IC recorder (1) includes microphones (4) (5) (6) (7) having directivity.
- a CPU Central Processing Unit
- the CPU (32) controls the entire IC recorder (1).
- the CPU (32) is connected to the bus (14).
- the bus (14) includes an AD / DA converter (12), a flash memory (18), a DSP (Digital Signal Processor) (22), an external memory controller (24), and an SDRAM (Synchronous Dynamic Random Access Memory) ( 28) is connected.
- the flash memory (18) stores a program executed by the CPU (32), parameters for executing the program, and the like.
- the CPU (32) includes a microphone (4) (5) (6) (7), an LED touch sensor (10) (20) (30) (40), an amplifier (34), and an angle detector (38).
- a playback button (42), a recording button (44), and a stop button (46) are connected.
- the IC recorder (1) of the present embodiment has “dictation mode”, “conference mode”, “conversation mode”, “music mode”, and “favorite mode” as recording modes, and is selected by the user or the first case. Either mode is selected according to the state after the body (1) is rotated. For example, when “dictation mode” is selected, the IC recorder (1) automatically sets recording parameters suitable for the dictation scene. When “conference mode” is selected, the IC recorder (1) automatically sets recording parameters suitable for the conference scene. When “conversation mode” is selected, the IC recorder (1) automatically sets recording parameters suitable for the conversation scene. When “music mode” is selected, the IC recorder (1) automatically sets recording parameters suitable for the music scene. When “favorite mode” is selected, the IC recorder (1) automatically sets recording parameters predetermined by the user.
- ALC Auto Level Control
- microphone sensitivity As recording parameters, ALC (Auto Level Control), microphone sensitivity, low cut filter, recording mode, VAS (Voice Active System) and recording peak limiter are prepared.
- VAS Vehicle Active System
- recording peak limiter As shown in FIG. 6, each set value is stored in the flash memory (18) as a correspondence table showing the relationship with each mode.
- the DSP (22) executes the ALC function, recording mode and recording peak limiter function.
- the CPU (32) refers to the correspondence table to instruct the DSP (22), and the DSP (22) executes each process based on the recording parameter setting values corresponding to each mode.
- the DSP (22) has a noise cancellation processing function.
- the DSP (22) is a digital sound that is collected by one of the microphones (4), (5), (6), and (7) set as a noise canceling microphone and inputted through the AD / DA converter (12). The signal is subjected to processing for conversion to an antiphase signal to generate a cancel signal.
- the noise of the digital audio signal collected by one of the microphones (4), (5), (6) and (7) set as the sound collecting microphone and inputted through the AD / DA converter (12) is reduced.
- the DSP (22) mixes the generated cancel signal with the digital audio signal that has been subjected to various processes. This processing is defined as noise cancellation processing.
- the CPU (32) corresponds to the microphone sensitivity switching and the VAS function, and executes each process based on the setting value of the function corresponding to each mode.
- the ALC function is a function for adjusting the input level of a digital audio signal to be processed.
- the low cut filter function is a function for cutting a low-band sound of a digital audio signal to be processed.
- the recording mode is a function for recording audio data with a compression method (or non-compression method) and a bit rate corresponding to the setting mode.
- the VAS function is a function that temporarily stops recording when a silent state occurs.
- the recording peak limiter function is a function that limits the input level of the digital audio signal to be processed to a predetermined value or less.
- Recording starts when the record button (44) is pressed.
- the user can selectively set the microphones (4), (5), (6), and (7) to the microphones for sound collection (on state) before recording starts, and selectively for noise cancellation. It can be specified as a microphone. Note that a microphone that is not set as a noise canceling microphone may be set as a sound collecting microphone.
- Audio collected by all microphones or selected microphones is output as an analog audio signal and input to the AD / DA converter (12) connected to the microphones (4) (5) (6) (7) Is done.
- the AD / DA converter (12) converts the input analog audio signal into a digital audio signal.
- the digital audio signal converted by the AD / DA conversion unit (12) is input to the DSP (22) and subjected to processing according to the set mode, cancellation processing, and other various processing.
- the processed digital audio signal is temporarily stored in the SDRAM (28).
- the DSP (22) reads the digital audio signal stored in the SDRAM (28), processes the digital audio signal with a compression method (non-compression method) and a bit rate according to the set mode, and after processing Are temporarily stored in the SDRAM (28) as audio data.
- the CPU (32) controls the external memory controller (24) to start recording the audio data stored in the SDRAM (28) to the external memory card (26).
- the recording is ended when the stop button (46) is pressed.
- the recorded audio data is recorded on the external memory card (26) as an audio file.
- the process from sound collection by the microphone to recording on the external memory card (26) is defined as recording.
- a desired audio file is specified from a plurality of audio files recorded on the external memory card (26) by the user.
- playback button (42) When the playback button (42) is pressed, playback of the designated audio file is started.
- the sound file is temporarily stored in the SDRAM (28) from the external memory card (26) under the control of the CPU (32).
- Various processes for reproduction such as expansion processing are performed on the audio file by the DSP (22), and the processed audio file is output to the AD / DA converter as a digital audio reproduction signal.
- the digital audio reproduction signal is converted into an analog reproduction signal by the AD / DA converter (12), and the analog reproduction signal is output to the amplifier (34).
- the amplifier (34) adjusts the gain of the analog reproduction signal, and then outputs the analog reproduction signal to the speaker (36).
- the speaker (36) outputs an analog reproduction signal as sound. Then, when the stop button (46) is pressed, the reproduction ends.
- a process from when an audio file is temporarily stored in the SDRAM (28) from the external memory card (26) until it is output to the speaker (36) as an analog playback signal is defined as playback.
- the LED touch sensors (10), (20), (30), and (40) disposed on the top surface (9) include the LEDs (10a), (20a), (30a), and (40a) and the sensors (10b) (20b ) (30b) (40b).
- the sensor (10b) (20b) (30b) (40b) senses that the LED touch sensor (10) (20) (30) (40) has been touched by the user, and the LED (10a) (20a) (30a ) (40a) emits light.
- the LED touch sensors (10), (20), (30), and (40) one of the microphones (4), (5), (6), (7) that is positioned downward relative to the touched LED touch sensor.
- the LEDs (10a), (20a), (30a), and (40a) emit light if the microphone located in the downward direction is set as the sound collecting microphone.
- a register (not shown) is provided in the CPU (32), and flags (F10) (F20) (F30) (F40) are stored in the register.
- the values of the flags (F10), (F20), (F30), and (F40) correspond to the light emission states of the LEDs (10a), (20a), (30a), and (40a).
- the value of the flag is 1 when the LED is in the light emitting state, and the value of the flag is 0 when the LED is not in the light emitting state (when the LED is not in the light emitting state).
- the LED located above the microphone set as the microphone for sound collection emits light. Further, when the LED touch sensor is touched, the microphone located below the LED touch sensor is switched to the sound collecting microphone or to the off state. Thereby, the user can set the state of the microphone by an intuitive operation.
- the IC recorder (1) changes from the first state shown in FIGS. 1 and 2 to the second state shown in FIG. 3 when the first casing (2) is rotated by the user.
- the angle detection unit (38) detects the rotation angle of the first housing (2), and the microphone (4) and the microphone (5) as in the first state are positioned in the vertical direction. It detects how much the microphone (4) has moved from the state where it is.
- the CPU (32) selects one of the plurality of recording modes described above according to the detected angle. In the first state, the angle detected by the angle detector (38) is 0 degrees. In the second state, the angle detected by the angle detector (38) is 90 degrees.
- the rotation operation of the first housing (2) corresponds to the rotation of the knob for adjusting the volume.
- the sound volume is changed according to the rotation angle of the first housing (2). In the first state, the volume is at the lowest level, and in the second state, the volume is at the highest level. As the first casing (2) is rotated counterclockwise and the rotation angle approaches 90 degrees, the volume level increases.
- FIGS. 7 to 10 are diagrams for explaining the states of the microphones (4), (5), (6), and (7) set according to the rotation angle of the first casing (2) and the recording modes. It is the simplified view of the 1st case (2) seen from the upper surface of 1 case (2).
- FIG. 7 shows the IC recorder (1) immediately after turning on the power in the first state or immediately after the first casing (2) is rotated so as to change from the second state to the first state.
- the microphones (4) and (5) are positioned below the (10), and the microphones (6) and (7) are positioned below the LED touch sensor (20).
- all the microphones (4), (5), (6), and (7) are set as microphones for collecting sound.
- only the LED touch sensors (10) and (20) function (validated), and the LED touch sensors (30b) and (40b) do not function (disabled). Further, the LEDs (10a) and (20a) emit light, the conversation mode is automatically set as the recording mode, and the IC recorder (1) is in a standby state.
- the record button (44) If the user presses the record button (44) here, recording starts in the conversation mode. Specifically, as shown in FIG. 6, the ALC function is on, the microphone sensitivity is low, the low cut filter function is on, the MP3 compression bit rate is 128 kbps as the recording mode, the VAS function is off, and the recording peak limiter function is on. Recording is started based on the sound collected by the microphones (4), (5), (6), and (7) when set to OFF. When the stop button (46) is pressed, recording ends and the IC recorder (1) enters a standby state.
- the ALC function is on, the microphone sensitivity is low, the low cut filter function is on, the MP3 compression method bit rate is 64 kbps as the recording mode, the VAS function is off, and the recording peak limiter function is on. Recording is started based on the sound collected by the microphones (4) and (5) and the sound collected by the microphones (6) and (7) for noise cancellation.
- the stop button (46) is pressed, recording ends and the IC recorder (1) enters a standby state.
- FIG. 9 shows the IC recorder (1) immediately after turning on the power in the second state or immediately after the first housing (2) is rotated so as to change from the first state to the second state.
- the microphone (4) is located in the downward direction
- the microphone (6) is located in the downward direction of the LED touch sensor (20)
- the microphone (5) is located in the downward direction of the LED touch sensor (30).
- the microphone (7) is positioned below the LED touch sensor (40).
- all microphones (4), (5), (6) and (7) are set as microphones for sound collection, and all LED touch sensors (10), (20) ( 30) (40) is activated. Further, the LEDs (10a), (20a), (30a), and (40a) emit light, the conference mode is automatically set as the recording mode, and the IC recorder (1) enters the standby state.
- the recording button (44) when the user presses the recording button (44), recording starts in the conference mode. Specifically, as shown in FIG. 6, the ALC function is on, the microphone sensitivity is high, the low cut filter function is on, the MP3 compression bit rate is 128 kbps as the recording mode, the VAS function is off, and the recording peak limiter function is on. Recording is started based on the sound collected by the microphones (4), (5), (6), and (7) when set to OFF. When the stop button (46) is pressed, recording ends and the IC recorder (1) enters a standby state.
- the LED touch sensor (20) and the LED touch sensor (40) are touched by the user, as shown in FIG. 10, the LEDs arranged in the diagonal direction of the LED touch sensor (20). Light emission of the LED (10a) of the touch sensor (10) is prohibited, and light emission of the LED (30a) of the LED touch sensor (30) arranged in the diagonal direction of the LED touch sensor (40) is prohibited. .
- the microphones (4) and (5) are designated as noise canceling microphones.
- step S101 the CPU (32) determines whether or not the recording button (44) is pressed in step S101. If YES is determined in the step S101, the process proceeds to a step S103, and the CPU (32) controls each unit so as to start recording. Next, the process proceeds to step S105, and the CPU (32) determines whether or not the stop button (46) has been pressed. Until it is determined YES, the CPU (32) repeats the determination. If "YES" is determined here, the process proceeds to a step S107, the CPU (32) controls each unit to end the recording, and the process returns to the step S101.
- step S101 If NO is determined in step S101, the process proceeds to step S109, and the CPU (32) determines whether or not the playback button (42) is pressed. If NO is determined in step S109, the process returns to step S101. If YES is determined, the process proceeds to step S111.
- the state in which the determination is not YES in step S101 and step S109 and the CPU (32) repeatedly performs the determination corresponds to the standby state.
- step S111 the CPU (32) controls each unit to start reproduction.
- step S113 the CPU (32) determines whether or not the stop button (46) is pressed, and the CPU (32) repeats the determination until it is determined YES. If “YES” is determined here, the process proceeds to a step S115, the CPU (32) controls each unit to end the reproduction, and the process returns to the step S101.
- This mode selection task is forcibly terminated when YES is determined in step S101 or step S109 in the recording and playback task, and is executed when the power is turned on or the step of step S107 or step S115 is terminated. .
- step S201 the CPU (32) determines whether or not the angle detected by the angle detection unit (38) is 0 degrees. If “YES” is determined in the step S201, the process proceeds to a step S203, and the CPU (32) sets the conversation mode and sets the values of the flag (F10) and the flag (F20) to 1. Next, the process proceeds to step S205, where the CPU (32) enables the LED touch sensors (10) (20), disables the LED touch sensors (30) (40), and emits the LEDs (10a) (20a). Let Next, the process proceeds to step S207, and the CPU (32) sets the microphones (4), (5), (6), and (7) as sound collection microphones.
- step S209 the CPU (32) determines whether or not the LED touch sensor (10) is touched. If NO is determined in step S209, the process proceeds to step S223, and if YES is determined, the process proceeds to step S211. In step S211, the CPU (32) determines whether or not the value of the flag (F20) is 1. If NO is determined in step S223, the process proceeds to step S225. If YES is determined, the process proceeds to step S213. In step S213, the CPU (32) determines whether or not the value of the flag (F10) is 1. If NO, the process proceeds to step S219.
- step S219 the CPU (32) sets the conversation mode, causes the LED (10a) to emit light, and sets the value of the flag (F10) to 1.
- step S221 the CPU (32) sets the microphones (4) and (5) as the sound collecting microphone, and the process proceeds to step S223.
- step S213 If YES is determined in the step S213, the process proceeds to a step S215, and the CPU (32) sets the value of the flag (F20) to 0 by making the LED (20a) not emit light. Then, the process proceeds to step S217, and the CPU (32) sets the microphones (6) and (7) as noise canceling microphones, and the process proceeds to step S223. In step S223, the CPU (32) determines whether or not the angle detected by the angle detector (38) is 0 degree. If YES, the process returns to step S209. If NO, the process proceeds to step S224. move on.
- step S211 the process proceeds to step S225, and the CPU (32) determines whether or not the LED touch sensor (20) is touched. If it is determined as YES in step S225, the process proceeds to step S227, and the CPU (32) determines whether or not the value of the flag (F10) is 1. If “YES” is determined in the step S227, the process proceeds to a step S229, and the CPU (32) determines whether or not the value of the flag (F20) is 1. If it is determined as YES in step S229, the process proceeds to step S231, and if it is determined as NO, the process proceeds to step S235. If NO is determined in step S225 and step S227, the process proceeds to step S223.
- step S231 the CPU (32) sets the dictation mode as the recording mode, turns off the LED (10a), and sets the flag (F10) to 0.
- step S233 the CPU (32) sets the microphones (4) and (5) as noise canceling microphones, and the process proceeds to step S223.
- step S235 the CPU (32) sets the conversation mode as the recording mode, causes the LED (20a) to emit light, and sets the value of the flag (F20) to 1. Then, the process proceeds to step S237, and the CPU (32) sets the microphones (6) and (7) as the sound collecting microphone, and the process proceeds to step S223.
- step S224 the CPU (32) sets the conference mode as the recording mode, and sets the values of the flags (F10) (F20) (F30) (F40) to 1.
- step S226 the CPU (32) activates the LED touch sensors (10), (20), (30), and (40), and emits the LEDs (10a), (20a), (30a), and (40a).
- step S239 the CPU (32) determines whether any of the LED touch sensors (10) (20) (30) (40) is touched. If NO is determined in the step S239, the process proceeds to a step S253, and if YES is determined, the process proceeds to a step S241.
- step S241 the CPU (32) determines whether or not the value of the flag corresponding to the touched LED touch sensor is 1. In this step, for example, when the touched LED touch sensor is the LED touch sensor (10), the CPU (32) determines whether or not the value of the flag (F10) is 1. If NO is determined in step S241, the process proceeds to step S243, and the CPU (32) causes the LED of the touched LED touch sensor to emit light, and sets the value of the flag corresponding to the touched LED touch sensor to 1. To do. In this step, for example, when the touched LED touch sensor is the LED touch sensor (10), the CPU (32) causes the LED (10a) to emit light and sets the value of the flag (F10) to 1.
- step S245 the CPU (32) sets the microphone located under the touched LED touch sensor as a sound collecting microphone.
- the CPU (32) sets the microphone (4) as a sound collecting microphone.
- step S241 the process proceeds to a step S247, and the CPU (32) determines whether the value of the flag corresponding to the LED touch sensor located in the diagonal direction of the touched LED touch sensor is “1”. Determine whether or not.
- the CPU (32) determines whether the value of the flag (F20) corresponding to the LED touch sensor (20) is 1. Is determined.
- step S247 the process proceeds to step S253, and if YES is determined, the process proceeds to step S249.
- the CPU (32) turns off the LED of the LED touch sensor located in the diagonal direction of the touched LED touch sensor. In this step, for example, when the touched LED touch sensor is the LED touch sensor (10), the CPU (32) turns off the LED (20a).
- step S251 the CPU (32) sets a microphone positioned in the diagonal direction of the touched LED touch sensor as a noise canceling microphone.
- the CPU (32) sets the microphone (6) as a noise canceling microphone.
- step S253 the CPU (32) determines whether or not the angle detected by the angle detection unit (38) is 0 degrees. If it is determined as YES in step S253, the process returns to step S209, and if it is determined NO, the process returns to step S239.
- a microphone positioned in a diagonal direction of the touched LED touch sensor is set as a noise canceling microphone.
- a microphone positioned below the sensor may be set as a noise canceling microphone.
- the microphone (4) may be set as a noise canceling microphone.
- the microphone (4) is already set as a noise canceling microphone, when the sensor (10b) is touched, the microphone (4) is set as a sound collecting microphone.
- a microphone positioned below the LED touch sensor other than the touched LED touch sensor may be set as a noise canceling microphone.
- the microphones (5), (6), and (7) are set as noise canceling microphones.
- the microphone (4) is already set as a noise canceling microphone, when the LED touch sensor (10) is touched, the microphone (4) is set as a sound collecting microphone.
- 1 IC recorder 2 first housing, 3rd housing, 4 microphone, 5 microphone, 6 microphone, 7 microphone, 9 top surface, 10 LED touch sensor, 20 LED touch sensor, 22 DSP, 30 LED touch sensor, 32 CPU, 36 speaker, 38 angle detector, 40 LED touch sensor, 42 play button, 44 record button, 46 stop button.
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Abstract
Description
ICレコーダ(1)は、指向性を有するマイクロフォン(4)(5)(6)(7)を含む。CPU(Central Processing Unit)(32)はICレコーダ(1)の全体を制御する。CPU(32)はバス(14)と接続されている。さらに、バス(14)には、AD/DA変換部(12)、フラッシュメモリ(18)、DSP(Digital Signal Processor)(22)、外部メモリコントローラ(24)及びSDRAM(Synchronous Dynamic Random Access Memory)(28)が接続されている。フラッシュメモリ(18)は、CPU(32)が実行するプログラム、及び該プログラムを実行するためのパラメータ等を記憶する。また、CPU(32)には、マイクロフォン(4)(5)(6)(7)、LEDタッチセンサ(10)(20)(30)(40)、アンプ(34)、角度検出部(38)、再生ボタン(42)、録音ボタン(44)及び停止ボタン(46)が接続されている。
ICレコーダ(1)に電源が投入されると、CPU(32)はステップS101において録音ボタン(44)が押下されたか否かを判別する。ステップS101においてYESと判別されると、処理はステップS103へ進み、CPU(32)は録音を開始させるべく各部を制御する。次に処理はステップS105へ進み、CPU(32)は停止ボタン(46)が押下されたか否かを判別する。YESと判別されるまで、CPU(32)は該判別を繰り返す。ここでYESと判別されると処理はステップS107へ進み、CPU(32)は録音を終了させるべく各部を制御し、処理はステップS101へ戻る。
Claims (6)
- 上下方向に重ねて配置され、少なくとも一方が回動自在に支持された第1筐体(2)及び第2筐体(3)と、
前記第1筐体(2)及び前記第2筐体(3)の夫々に配備された第1マイクロフォン及び第2マイクロフォンを含む複数のマイクロフォンと、
前記第1マイクロフォンと前記第2マイクロフォンとの相対位置に応じて、所定の録音モードを設定するとともに、該設定された録音モードで録音する機能を有効化する制御部(32)とを備える、録音装置。 - 前記複数のマイクロフォンは、前記第1筐体に前記第1マイクロフォンに対して対角方向に設けられた第3マイクロフォンと、前記第2筐体に前記第2マイクロフォンに対して対角方向に設けられた第4マイクロフォンとをさらに含み、
前記第1マイクロフォン及び前記第3マイクロフォンの一方と、前記第2マイクロフォン及び前記第4マイクロフォンの一方とが上下方向に重ねた位置となるように、前記1筐体(2)及び前記第2筐体(3)の少なくとも一方が回動されたとき、前記第1マイクロフォン及び前記第3マイクロフォンの一方と、前記第2マイクロフォン及び前記第4マイクロフォンの他方とは、互いに逆方向に指向性を有し、
前記第1マイクロフォンと前記第3マイクロフォンとを結ぶ第1対角線と、前記第2マイクロフォンと前記第4マイクロフォンとを結ぶ第2対角線とが、略直交状態になるように前記1筐体(2)及び前記第2筐体(3)の少なくとも一方が回動されたとき、前記第1マイクロフォンと前記第2マイクロフォンと前記第3マイクロフォンと前記第4マイクロフォンとは互いに異なる方向に指向性を有する、請求項1記載の録音装置。 - 前記第1マイクロフォンは前記第1筐体(2)の側面近傍に配置され、
前記録音装置は、さらに、前記第1筐体(2)の天面上であって、前記第1マイクロフォンの近傍に設けられる第1センサを備え、
前記制御部(32)は、前記第1センサによる検出が為されると、前記第1マイクロフォンと対角方向に位置するマイクロフォンをオフにする、又は、該マイクロフォンから出力される音声信号に基づき前記第1マイクロフォンから出力される音声信号に含まれるノイズを軽減させる機能を有効化する請求項2に記載の録音装置。 - 前記録音装置は、前記第1筐体(2)の天面上に設けられる第3センサと第4センサとをさらに備え、
前記第3センサと前記第4センサとは、前記1筐体(2)及び前記第2筐体(3)の少なくとも一方が回動されることによって、前記第2対角線が前記第1対角線と略直交する場合に、前記第2対角線上に設けられ、
前記第3センサによる検出が為されると、前記制御部(32)は、前記第3センサの近傍に位置するマイクロフォンに対して対角方向に位置するマイクロフォンをオフする又は、該マイクロフォンから出力される音声信号に基づき、前記第3センサの近傍に位置するマイクロフォンから出力される音声信号に含まれるノイズを軽減させる機能を有効化し、
前記第4センサによる検出が為されると、前記制御部(32)は、該第4センサの近傍に位置するマイクロフォンに対して対角方向に位置するマイクロフォンをオフする又は、該マイクロフォンから出力される音声信号に基づき、前記第4センサの近傍に位置するマイクロフォンから出力される音声信号に含まれるノイズを軽減させる機能を有効化する、請求項3に記載の録音装置。 - 前記録音装置は、前記第1筐体(2)の天面上に設けられて、前記複数のマイクロフォンの状態を示す発光部をさらに備える、請求項1に記載の録音装置。
- 前記録音装置は、前記第1筐体(2)の天面上に設けられて、回動軸(51)近傍に録音された音声を出力するスピーカ(36)をさらに備える、請求項1に記載の録音装置。
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US13/825,016 US20130177191A1 (en) | 2011-03-11 | 2012-02-14 | Audio recorder |
JP2013504617A JPWO2012124422A1 (ja) | 2011-03-11 | 2012-02-14 | 録音装置 |
EP12758338.3A EP2615850A4 (en) | 2011-03-11 | 2012-02-14 | AUDIO RECORDING DEVICE |
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Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2021100209A (ja) * | 2019-12-23 | 2021-07-01 | ティアック株式会社 | 録音再生装置 |
Families Citing this family (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US9574762B1 (en) | 2014-09-30 | 2017-02-21 | Amazon Technologies, Inc. | Light assemblies for electronic devices containing audio circuitry |
US9641919B1 (en) * | 2014-09-30 | 2017-05-02 | Amazon Technologies, Inc. | Audio assemblies for electronic devices |
DK201500810A1 (en) * | 2015-12-16 | 2017-07-03 | Bang & Olufsen As | A loudspeaker and microphone device |
US9793869B1 (en) * | 2016-04-27 | 2017-10-17 | Cisco Technology, Inc. | Satellite microphone assembly |
USD834567S1 (en) * | 2017-07-24 | 2018-11-27 | Cisco Technology, Inc. | Microphone |
US10524047B2 (en) * | 2018-04-09 | 2019-12-31 | Cisco Technology, Inc. | Satellite microphone assembly |
US11523236B2 (en) * | 2021-03-18 | 2022-12-06 | Lenovo (Singapore) Pte. Ltd. | Techniques for active microphone use |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2001296343A (ja) | 2000-04-11 | 2001-10-26 | Nec Corp | 音源方位設定装置及びそれを備えた撮像装置、送信システム |
JP2010074827A (ja) * | 2008-08-22 | 2010-04-02 | Yamaha Corp | 録音再生装置 |
JP2010532137A (ja) * | 2007-06-28 | 2010-09-30 | マイクロソフト コーポレーション | カメラスピーカフォンのためのマイクロフォン配列 |
Family Cites Families (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP3797751B2 (ja) * | 1996-11-27 | 2006-07-19 | 富士通株式会社 | マイクロホンシステム |
GB0121206D0 (en) * | 2001-08-31 | 2001-10-24 | Mitel Knowledge Corp | System and method of indicating and controlling sound pickup direction and location in a teleconferencing system |
US20030059061A1 (en) * | 2001-09-14 | 2003-03-27 | Sony Corporation | Audio input unit, audio input method and audio input and output unit |
JP4424035B2 (ja) * | 2004-03-30 | 2010-03-03 | カシオ計算機株式会社 | 撮像装置、この撮像装置に用いられる音声入力制御方法及びプログラム |
JP4639639B2 (ja) * | 2004-05-18 | 2011-02-23 | ソニー株式会社 | マイクロフォン信号生成方法および通話装置 |
JP2006033615A (ja) * | 2004-07-20 | 2006-02-02 | Olympus Corp | 收音装置 |
JP2006135503A (ja) * | 2004-11-04 | 2006-05-25 | Canon Inc | 音声記録装置及び音声記録装置の音声記録方法 |
JP2007214913A (ja) * | 2006-02-09 | 2007-08-23 | Yamaha Corp | 収音装置 |
JP4345784B2 (ja) * | 2006-08-21 | 2009-10-14 | ソニー株式会社 | 音響収音装置及び音響収音方法 |
JP5082878B2 (ja) * | 2007-02-28 | 2012-11-28 | パナソニック株式会社 | 音声会議装置 |
JP4332753B2 (ja) * | 2007-06-13 | 2009-09-16 | ソニー株式会社 | 音声レコーダ |
JP5034819B2 (ja) * | 2007-09-21 | 2012-09-26 | ヤマハ株式会社 | 放収音装置 |
-
2012
- 2012-02-14 US US13/825,016 patent/US20130177191A1/en not_active Abandoned
- 2012-02-14 JP JP2013504617A patent/JPWO2012124422A1/ja active Pending
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Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2001296343A (ja) | 2000-04-11 | 2001-10-26 | Nec Corp | 音源方位設定装置及びそれを備えた撮像装置、送信システム |
JP2010532137A (ja) * | 2007-06-28 | 2010-09-30 | マイクロソフト コーポレーション | カメラスピーカフォンのためのマイクロフォン配列 |
JP2010074827A (ja) * | 2008-08-22 | 2010-04-02 | Yamaha Corp | 録音再生装置 |
Non-Patent Citations (1)
Title |
---|
See also references of EP2615850A4 |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2021100209A (ja) * | 2019-12-23 | 2021-07-01 | ティアック株式会社 | 録音再生装置 |
JP7396029B2 (ja) | 2019-12-23 | 2023-12-12 | ティアック株式会社 | 録音再生装置 |
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JPWO2012124422A1 (ja) | 2014-07-17 |
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