JPH04188971A - Sound quality setting device - Google Patents
Sound quality setting deviceInfo
- Publication number
- JPH04188971A JPH04188971A JP2317493A JP31749390A JPH04188971A JP H04188971 A JPH04188971 A JP H04188971A JP 2317493 A JP2317493 A JP 2317493A JP 31749390 A JP31749390 A JP 31749390A JP H04188971 A JPH04188971 A JP H04188971A
- Authority
- JP
- Japan
- Prior art keywords
- sound quality
- signal
- low
- pass filter
- audio signal
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 230000005236 sound signal Effects 0.000 claims abstract description 14
- 238000006243 chemical reaction Methods 0.000 claims abstract description 12
- 238000003908 quality control method Methods 0.000 claims abstract description 10
- 230000010354 integration Effects 0.000 abstract description 4
- 230000006870 function Effects 0.000 abstract description 2
- 238000010586 diagram Methods 0.000 description 4
- 206010011224 Cough Diseases 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
Landscapes
- Television Receiver Circuits (AREA)
- Circuit For Audible Band Transducer (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野］
本発明は、テレビ受信機等において、音楽、ニュース等
の音源内容に応じ適性な音質に自動設定する音質設定装
置に関する。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a sound quality setting device for automatically setting an appropriate sound quality in accordance with the content of a sound source such as music or news in a television receiver or the like.
従来、テレビ受信機等で音楽またはニュース等の番組内
容に適した音ｉｔ調節はユーザが低音調節または高音調
節ボリュームをその都度適宜調節するかもしくは予め設
定された周波数特性を再生する操作ボタンを操作する等
の方法が一般的であった。Conventionally, in order to adjust the sound of a TV receiver or the like to suit the content of a program such as music or news, the user either adjusts the bass or treble volume as appropriate each time, or operates an operation button that reproduces a preset frequency characteristic. A common method was to do this.
従って、より適した音質にするにはその都度音質調節ボ
リュームの操作もしくは前記ボタンの選択操作を必要と
する欠点を有していた。Therefore, in order to obtain a more suitable sound quality, it is necessary to operate the sound quality adjustment volume or select the button each time.
本発明は、受信音声信号の周波数成分を予め記憶しであ
る基準信号と比較しその比較データをもとに音質を定め
られた一定の音質に自動的に設定する音質設定装置を提
供することを目的とする。The present invention provides a sound quality setting device that compares the frequency components of a received audio signal with a pre-stored reference signal and automatically sets the sound quality to a predetermined constant sound quality based on the comparison data. purpose.
［課題を解決するための手段］
本発明は、音声信号の内容により音質を制御する装置に
おいて、入力音声信号の周波数を低域成分と中域成分と
高域成分とに分離するために設けた低域通過フィルタと
帯域通過フィルタと高域通過フィルタと、該各フィルタ
よりの各出力信号を積分するために該各フィルタの出力
ごとに設けた第１の積分回路と第２の積分回路と第３の
積分回路と、該各積分回路よりの各アナログ出力信号を
ディジタル信号に変換するために該各積分回路の出力ご
とに設けた第１のＡ／Ｄ変換回路と第２のＡ／Ｄ変換回
路と第３のＡ／Ｄ変換回路と、該各Ａ／Ｄ変換回路より
の信号とメモリ部よりの基準信号とを低域ごと中域ごと
高域ごとに比較しその差を出力する比較部と、低域ごと
中域ごとおよび高域ごとに記憶している該基準信号を制
御用マイコンの指示で比較部に出力するメモリ部と、メ
モリ部への該基準信号の出力指示と該比較部での比較を
指示し該比較部よりの信号から一定の音質制御信号を音
質制御部へ出力する制御用マイコンとで構成した音質設
定装置を提供するものである。[Means for Solving the Problems] The present invention provides a device for controlling sound quality based on the content of an audio signal, which is provided to separate the frequency of an input audio signal into a low frequency component, a middle frequency component, and a high frequency component. A low-pass filter, a band-pass filter, a high-pass filter, and a first integrating circuit, a second integrating circuit, and a second integrating circuit provided for each output of each filter to integrate each output signal from each filter. 3 integrating circuits, and a first A/D converter circuit and a second A/D converter provided for each output of each integrating circuit in order to convert each analog output signal from each integrating circuit into a digital signal. circuit, a third A/D conversion circuit, and a comparison section that compares the signals from each A/D conversion circuit and the reference signal from the memory section for each low frequency range, middle frequency range, and high frequency range, and outputs the difference. , a memory section that outputs the reference signal stored for each low range, each middle range, and each high range to a comparison section according to instructions from a control microcomputer; and an instruction to output the reference signal to the memory section and the comparison section. The present invention provides a sound quality setting device comprising a control microcomputer that instructs a comparison between the two and outputs a constant sound quality control signal from the signal from the comparison section to a sound quality control section.
〔作用］
受信音声信号の周波数成分をフィルタを用い低域、中域
、高域に分は予め記憶しである基準信号とを低域、中域
、高域ごとに比較しその比較データをもとに音質を定め
られた一定の音質に自動的に設定する。[Operation] Using a filter, the frequency components of the received audio signal are compared with a reference signal whose low, middle, and high ranges are stored in advance, and the comparison data is also used. automatically sets the sound quality to a predetermined constant sound quality.
以下、図面に基づいて本発明による音質設定装置を説明
する。第１図は本発明による音質設定装置の一実施例の
要部ブロンク図である。図において、１は音声入力端子
、２は約１００七以下の周波数を通過させる低域通過フ
ィルタ、３は約１００ Ｈｚ以上５ＫＨｚ以下の周波数
を通過させる帯域通過フィルタ、４は約５ＫＨｚ以上の
周波数を通過させる高域通過フィルタ、５は低域通過フ
ィルタ２よりの信号を直流化する第１の積分回路、６は
帯域通過フィルタ３よりの信号を直流化する第２の積分
回路、７は高域通過フィルタ４よりの信号を直流化する
第３の積分回路、８は第１の積分回路５よりのアナログ
信号をディジタル信号に変換する第１のＡ／Ｄ変換回路
、９は第２の積分回路６よりのアナログ信号をディジタ
ル信号に変換する第２のＡ／Ｄ変換回路、工０は第３の
積分回路７よりのアナログ信号をディジタル信号に変換
する第３のＡ／Ｄ変換回路、１１は該各Ａ／Ｄ変換回路
よりの信号とメモリ部１２よりの信号とを低域ごと中域
ごとおよび高域ごとに比較しその差信号を低域ごと中域
ごとおよび高域ごとに出力する比較部、１２は比較部１
１へ基準信号を出力するメモリ部、Ｉ３はメモリ部１２
に対し比較部ｌＩへの基準信号出力を指示する信号の出
力と比較部１１の比較を指示する信号の出力と比較部１
１よりの信号から一定の音質制御信号を出力する制御用
マイコン、Ｉ４は制御用マイコン１３よりの信号に従い
人力音声信号（左／右）の周波数を適性化して出力する
音質制御部、１５．１６は左右の音声信号入力端子、Ｉ
７、Ｉ８は音声信号出力端子である。Hereinafter, a sound quality setting device according to the present invention will be explained based on the drawings. FIG. 1 is a bronch diagram of a main part of an embodiment of a sound quality setting device according to the present invention. In the figure, 1 is an audio input terminal, 2 is a low pass filter that passes frequencies of about 100 Hz or less, 3 is a band pass filter that passes frequencies of about 100 Hz to 5 kHz, and 4 is a band pass filter that passes frequencies of about 5 kHz or more. 5 is a first integrating circuit that converts the signal from the low-pass filter 2 into DC, 6 is a second integrating circuit that converts the signal from the band-pass filter 3 into DC, and 7 is a high-pass filter. A third integrating circuit converts the signal from the pass filter 4 into a direct current; 8 is a first A/D converter circuit that converts the analog signal from the first integrating circuit 5 into a digital signal; 9 is a second integrating circuit. 6 is a second A/D converter circuit that converts the analog signal from the third integrating circuit 7 into a digital signal; A comparison in which the signals from each A/D conversion circuit and the signal from the memory section 12 are compared for each low range, each middle range, and each high range, and the difference signals are output for each low range, each middle range, and each high range. part, 12 is comparison part 1
1, I3 is the memory section 12 that outputs the reference signal to
The output of the signal instructing the output of the reference signal to the comparator lI, the output of the signal instructing the comparison of the comparator 11, and the comparator 1
15.16 a control microcomputer that outputs a constant sound quality control signal from the signal from the control microcomputer 13; are left and right audio signal input terminals, I
7 and I8 are audio signal output terminals.
次に、比較部ＩＩとメモリ部１２および制御用マイコン
Ｉ３の作用を第２図を併用し説明する。第２図は人力信
号例と基準信号例との相関を示した相関図である。第２
図ではメモリ部１２から比較部１１へ出力する基準信号
ば基＊ （１）乃至（３）の３種類とした例を示す。こ
の種類数を増やす口上は自由である。Next, the functions of the comparison section II, the memory section 12, and the control microcomputer I3 will be explained with reference to FIG. FIG. 2 is a correlation diagram showing the correlation between an example of a human input signal and an example of a reference signal. Second
The figure shows an example in which three types of reference signals are output from the memory section 12 to the comparison section 11: (1) to (3). You are free to increase the number of types.
メモリ部１２はマイコン１３よりの指示に従い基準（１
）から順次基準（３）を比較部１１へ出力する。比較部
】】においては一定時間間隔（例えば数分毎）ごとに一
定時間（例えば数秒間）各基準信号と前記Ａ／Ｄ変換出
力との低域（Ｌ）どうし中域（Ｍ）どうしおよび高域（
Ｈ）どうしとを比較する。これらの時間は制御用マイコ
ン１３により前記メモリ部１２よりの基準信号出力と同
タイミングで制御される。The memory unit 12 stores the reference (1) according to instructions from the microcomputer 13.
), the reference (3) is sequentially output to the comparison unit 11. In the comparing section, the low range (L), mid range (M) and high range of each reference signal and the A/D conversion output are compared for a fixed time (for example, several seconds) at fixed time intervals (for example, every few minutes). Area (
H) Compare one another. These times are controlled by the control microcomputer 13 at the same timing as the reference signal output from the memory section 12.
比較した結果は比較出力（１ン乃至（３）に示したデー
タとして順次制御用マイコン１３へ出力する。制御用マ
イコン１３は比較出力のうちでり、Ｍ、Ｈ間の差の最も
小さい比較出力を選びこれに対応する音質制御信号を出
力する。本例の場合は基準（３）である。The comparison results are sequentially output to the control microcomputer 13 as data shown in comparison outputs (1 to (3)).The control microcomputer 13 selects the comparison output with the smallest difference between M and H. is selected and a corresponding sound quality control signal is output.In this example, the standard (3) is selected.
基準（３）の場合り、Ｍ、８間の差は零であり基ｉｉ！
（２）の場合はＬとＭとの間で差がある。各基準に対
する設定周波数特性は予め定めておくものであり第２図
中の（イ）（ロ）（ハ）が本例の場合である。In the case of criterion (3), the difference between M and 8 is zero and base ii!
In case (2), there is a difference between L and M. The set frequency characteristics for each reference are determined in advance, and (a), (b), and (c) in FIG. 2 are the cases in this example.
（イ）は中域（ｆｏ）に対し低高域を強調した音楽番組
に適するものであり、（ロ）は（イ）とは逆ニ中域（「
。）に対し低高域を落としたスピーチ番組に適するもの
であり、（ハ）は高域を中低域に対し落とした映画番組
に適するものである。制御用マイコン１３から出力され
る音質制御信号はこれらの設定周波数になるような信号
であり低域部（低音）Ｍ御信号と高域部（高音）制御信
号とからなる。音質制御部１４は該低域部（低音）制御
信号と咳高域部（高音）制御信号とに従い所定の周波数
特性に設定する。(A) is suitable for music programs that emphasize the low and high frequencies compared to the midrange (FO), and (B) is the opposite of (A).
. ) is suitable for speech programs where the low and high frequencies are lowered, and (c) is suitable for movie programs where the high range is lowered than the mid-low range. The sound quality control signal outputted from the control microcomputer 13 is a signal having these set frequencies, and consists of a low range (bass) M control signal and a high range (treble) control signal. The sound quality control unit 14 sets a predetermined frequency characteristic according to the low frequency range (bass) control signal and the cough high range (treble) control signal.
以上説明したように、本発明によれば、テレビ受信機等
の音声で放送番組内容による適性音質を従来手動にてそ
の都度設定していたものを入力信号の周波数成分を判別
しそれに応して音質を自動設定することが可能となりテ
レビ受信機等の機能向上に寄与するところが大きい。As explained above, according to the present invention, the frequency component of the input signal is determined and the appropriate sound quality according to the content of the broadcast program is determined by determining the frequency component of the input signal. This makes it possible to automatically set the sound quality, which greatly contributes to improving the functionality of television receivers and the like.
第１図は本発明による音質設定装置の一貫施例の要部ブ
ロック図、第２図は入力信号と基準信号との相関図であ
る。
図中、１は音声入力端子、２は低域通過フィルタ、３は
帯域通過フィルタ、４は高域通過フィルタ、５は第１の
積分回路、６は第２の積分回路、７は第３の積分回路、
８は第１のＡ／Ｄ変換回路、９は第２のＡ／Ｄ変換回路
、１０は第３のＡ／Ｄ変換回路、１１は比較部、Ｉ２は
メモリ部、Ｉ３は制御用マイコン、１４は音質制御部、
１５．１６は左右の音声信号入力端子、１７．１８は音
声信号出力端子である。
特許出願人 株式会社冨士通ゼネラル
第１図
第２図FIG. 1 is a block diagram of a main part of an integrated embodiment of a sound quality setting device according to the present invention, and FIG. 2 is a correlation diagram between an input signal and a reference signal. In the figure, 1 is an audio input terminal, 2 is a low-pass filter, 3 is a band-pass filter, 4 is a high-pass filter, 5 is a first integration circuit, 6 is a second integration circuit, and 7 is a third integration circuit. integral circuit,
8 is a first A/D conversion circuit, 9 is a second A/D conversion circuit, 10 is a third A/D conversion circuit, 11 is a comparison section, I2 is a memory section, I3 is a control microcomputer, 14 is the sound quality control section,
15.16 are left and right audio signal input terminals, and 17.18 are audio signal output terminals. Patent applicant Fujitsu General Co., Ltd. Figure 1 Figure 2
Claims (1)
力音声信号の周波数を低域成分と中域成分と高域成分と
に分離するために設けた低域通過フィルタと帯域通過フ
ィルタと高域通過フィルタと、該各フィルタよりの各出
力信号を積分するために該各フィルタの出力ごとに設け
た第１の積分回路と第２の積分回路と第３の積分回路と
、該各積分回路よりの各アナログ出力信号をディジタル
信号に変換するために該各積分回路の出力ごとに設けた
第１のＡ／Ｄ変換回路と第２のＡ／Ｄ変換回路と第３の
Ａ／Ｄ変換回路と、該各Ａ／Ｄ変換回路よりの信号とメ
モリ部よりの基準信号とを低域ごと中域ごと高域ごとに
比較しその差を出力する比較部と、低域ごと中域ごとお
よび高域ごとに記憶している該基準信号を制御用マイコ
ンの指示で比較部に出力するメモリ部と、メモリ部への
該基準信号の出力指示と該比較部での比較を指示し該比
較部よりの信号から一定の音質制御信号を音質制御部へ
出力する制御用マイコンとで構成したことを特徴とする
音質設定装置。In a device that controls sound quality based on the content of an audio signal, a low-pass filter, a band-pass filter, and a high-pass filter are provided to separate the frequency of an input audio signal into low-frequency components, middle-frequency components, and high-frequency components. and a first integrating circuit, a second integrating circuit, and a third integrating circuit provided for each output of each filter to integrate each output signal from each filter, and each of the integrated circuits from each integrating circuit. A first A/D conversion circuit, a second A/D conversion circuit, and a third A/D conversion circuit provided for each output of each of the integrating circuits to convert an analog output signal into a digital signal; A comparison section that compares the signal from each A/D conversion circuit and the reference signal from the memory section for each low range, middle range, and high range, and outputs the difference; A memory section that outputs the stored reference signal to a comparison section according to instructions from a control microcomputer, and an instruction to output the reference signal to the memory section and a comparison at the comparison section, and a signal from the comparison section. A sound quality setting device comprising a control microcomputer that outputs a constant sound quality control signal to a sound quality control section.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2317493A JPH04188971A (en) | 1990-11-21 | 1990-11-21 | Sound quality setting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2317493A JPH04188971A (en) | 1990-11-21 | 1990-11-21 | Sound quality setting device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH04188971A true JPH04188971A (en) | 1992-07-07 |
Family
ID=18088850
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2317493A Pending JPH04188971A (en) | 1990-11-21 | 1990-11-21 | Sound quality setting device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH04188971A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100505607B1 (en) * | 1998-06-22 | 2005-09-26 | 삼성전자주식회사 | Loudness control method and apparatus |
| JP5345067B2 (en) * | 2007-10-30 | 2013-11-20 | クラリオン株式会社 | Hearing sensitivity correction device |
-
1990
- 1990-11-21 JP JP2317493A patent/JPH04188971A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100505607B1 (en) * | 1998-06-22 | 2005-09-26 | 삼성전자주식회사 | Loudness control method and apparatus |
| JP5345067B2 (en) * | 2007-10-30 | 2013-11-20 | クラリオン株式会社 | Hearing sensitivity correction device |
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