JP2002368839A - Telephone and voice signal frequency correction method for the telephone - Google Patents
Telephone and voice signal frequency correction method for the telephoneInfo
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- JP2002368839A JP2002368839A JP2001171212A JP2001171212A JP2002368839A JP 2002368839 A JP2002368839 A JP 2002368839A JP 2001171212 A JP2001171212 A JP 2001171212A JP 2001171212 A JP2001171212 A JP 2001171212A JP 2002368839 A JP2002368839 A JP 2002368839A
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- correction data
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Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、携帯電話機や簡易
型携帯電話機（ＰＨＳ）等の電話機に関し、特に、音声
信号に対する周波数補正に係る。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a telephone set such as a portable telephone set and a simplified portable telephone set (PHS), and more particularly to a frequency correction for an audio signal.
【０００２】[0002]
【従来の技術】通常の固定電話機に比べて室外での通話
が多い携帯電話機等の電話機において音声品質向上に対
する要望は高い。音声品質向上の一つとして送話器から
の再生信号の周波数特性を補正する技術がある。図２は
周波数補正機能を備えた電話機の構成を示している。図
２に示されるように、電話機本体は、筐体２００内に、
受話器２０１と、アンプ２０２と、ディジタル／アナロ
グ変換手段２０３と、周波数補正する補正手段２０４
と、制御手段２０５と、送話器２０８と、アナログ／デ
ィジタル変換手段２０９と、を備える。2. Description of the Related Art There is a high demand for improvement in voice quality in telephones such as portable telephones, which have more outdoor calls than ordinary fixed telephones. There is a technique for correcting the frequency characteristics of a reproduction signal from a transmitter as one of voice quality improvements. FIG. 2 shows a configuration of a telephone provided with a frequency correction function. As shown in FIG. 2, the telephone body is housed in a housing 200.
Receiver 201, amplifier 202, digital / analog conversion means 203, and correction means 204 for frequency correction
, A control unit 205, a transmitter 208, and an analog / digital conversion unit 209.
【０００３】上記電話機における周波数補正は、補正手
段２０４に予め設定されている補正データに基づいて補
正手段の前段より入力される元信号の周波数特性を補正
する、若しくは送話器２０８より入力される信号を制御
信号として、制御手段２０５に予め設定された複数の補
正データから選択した１つの補正データに基づいて元信
号の周波数特性を補正するものである。[0003] The frequency correction in the above-mentioned telephone corrects the frequency characteristic of the original signal inputted from the preceding stage of the correction means based on the correction data preset in the correction means 204, or is inputted from the transmitter 208. Using the signal as a control signal, the frequency characteristic of the original signal is corrected based on one correction data selected from a plurality of correction data preset in the control unit 205.
【０００４】上記電話機において、補正手段２０４に設
定する補正データに任意の周波数特性を持たせることで
特定の帯域レベルの強弱を調整し、所望の音質、音色及
び音量等の信号を受話器２０１より再生することができ
る。[0004] In the above-mentioned telephone, the correction data set in the correction means 204 is given an arbitrary frequency characteristic to adjust the strength of a specific band level, and a signal such as a desired sound quality, tone and volume is reproduced from the receiver 201. can do.
【０００５】[0005]
【発明が解決しようとする課題】しかしながら従来の補
正技術では、予め設定された補正データに基づく周波数
特性の補正であるため、話者が実際に使用する様々の使
用状態に追随して周波数特性を補正することはできな
い。However, in the conventional correction technique, since the frequency characteristic is corrected based on preset correction data, the frequency characteristic can be adjusted according to various use states actually used by a speaker. It cannot be corrected.
【０００６】使用状態の一例として、筐体に話者の耳が
一部しか接触していない場合、筐体と話者の耳との間に
生じる空間により音声が漏洩し著しく周波数特性が変化
する。このような使用状態において、予め固定的に設定
された補正データに基づく従来の周波数補正では、十分
な音声品質の改善は望めない。As an example of a use state, when only a part of the speaker's ear is in contact with the housing, sound leaks due to the space generated between the housing and the speaker's ear, and the frequency characteristic changes significantly. . In such a use state, conventional frequency correction based on correction data fixedly set in advance cannot sufficiently improve the sound quality.
【０００７】本発明は上記事情に鑑みて成されたもの
で、適応的な周波数補正を可能にし、変動する使用状態
に追随して良好な音声品質を得ることができる電話機及
び該電話機の音声信号周波数補正方法を提供することを
目的とする。SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and has a telephone capable of performing adaptive frequency correction and obtaining good voice quality following a changing use state, and a voice signal of the telephone. It is an object to provide a frequency correction method.
【０００８】[0008]
【課題を解決するための手段】本発明の請求項１に係る
発明は、少なくとも受話器（受話器１０１）を有する筐
体（筐体１００）と、前記受話器へ供給する信号をアナ
ログ信号に変換するディジタル／アナログ変換手段（デ
ィジタル／アナログ変換手段１０３）と、前記ディジタ
ル／アナログ変換手段へ供給する信号の周波数特性を補
正する補正手段（補正手段１０４）と、前記補正手段に
設定する補正データを制御信号に基づき選択制御する制
御手段（制御手段１０５）と、を備える電話機におい
て、前記筐体と話者の耳との位置関係を検出する検出手
段（検出手段１０６）と、前記検出手段の検出結果に応
じて前記補正データを修正する修正データを算出して前
記制御手段に前記制御信号として供給する算出手段（算
出手段１０７）と、を具備したことを特徴とする。According to a first aspect of the present invention, there is provided a housing (housing 100) having at least a receiver (receiver 101), and a digital signal for converting a signal supplied to the receiver to an analog signal. / Analog conversion means (digital / analog conversion means 103), correction means (correction means 104) for correcting the frequency characteristics of the signal supplied to the digital / analog conversion means, and correction data to be set in the correction means. Control means (control means 105) for performing selection control based on the detection means (detection means 106) for detecting the positional relationship between the housing and the ear of the speaker, and a detection result of the detection means. Calculating means (calculating means 107) for calculating correction data for correcting the correction data accordingly and supplying the corrected data to the control means as the control signal; Characterized by comprising.
【０００９】請求項７に係る発明は、少なくとも受話器
（受話器１０１）を有する筐体（筐体１００）と、前記
受話器へ供給する信号をアナログ信号に変換するディジ
タル／アナログ変換手段（ディジタル／アナログ変換手
段１０３）と、前記ディジタル／アナログ変換手段へ供
給する信号の周波数特性を補正する補正手段（補正手段
１０４）と、前記補正手段に設定される補正データを制
御信号に基づき選択制御する制御手段（制御手段１０
５）と、を備える電話機の音声信号周波数補正方法にお
いて、前記筐体と話者の耳との位置関係を検出し、検出
結果に応じて前記補正データを修正する修正データを算
出して前記制御手段に前記制御信号として供給する、こ
とを特徴とする。According to a seventh aspect of the present invention, there is provided a housing (housing 100) having at least a receiver (receiver 101), and a digital / analog converter (digital / analog converter) for converting a signal supplied to the receiver to an analog signal. Means 103), a correction means (correction means 104) for correcting the frequency characteristics of the signal supplied to the digital / analog conversion means, and a control means (selection means for selectively controlling correction data set in the correction means based on a control signal. Control means 10
5) detecting the positional relationship between the housing and the ear of the speaker, calculating correction data for correcting the correction data according to the detection result, and performing the control. The control signal is supplied to the means as the control signal.
【００１０】請求項１及び請求項７に係る発明によれ
ば、変動する使用状態を検出手段で検出し、この検出結
果に基づいて算出した修正データで補正手段に設定する
補正データを修することにより、適応的な周波数補正を
可能にし、変動する使用状態に追随して良好な音声品質
を得ることができる。According to the first and seventh aspects of the present invention, the fluctuating use state is detected by the detecting means, and the correction data set in the correcting means is corrected by the correction data calculated based on the detection result. Accordingly, it is possible to perform adaptive frequency correction, and obtain good voice quality following a changing use state.
【００１１】[0011]
【発明の実施の形態】以下、本発明の実施の形態につい
て図面を参照して説明する。図１は本発明の一実施の形
態に係る電話機の構成を示すブロック図である。図１に
示されるように、電話機本体は、筐体１００内に、受話
器１０１と、アンプ１０２と、ディジタル／アナログ変
換手段１０３と、ディジタル／アナログ変換手段へ供給
する信号の周波数特性を補正する補正手段１０４と、補
正手段に設定する補正データを制御信号に基づき選択制
御する制御手段１０５と、筐体と話者の耳との位置関係
を検出する検出手段１０６と、検出手段の検出結果に応
じて補正データを修正する修正データを算出して制御手
段に制御信号として供給する算出手段１０７と、送話器
１０８と、送話器からの信号をディジタル信号に変換し
て制御信号として制御手段に供給するアナログ／ディジ
タル変換手段１０９と、を備える。Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a block diagram showing a configuration of a telephone according to one embodiment of the present invention. As shown in FIG. 1, a telephone body includes a receiver 100, an amplifier 102, a digital / analog converter 103, and a correction for correcting frequency characteristics of a signal supplied to the digital / analog converter in a housing 100. Means 104, control means 105 for selectively controlling correction data to be set in the correction means based on the control signal, detection means 106 for detecting the positional relationship between the housing and the ear of the speaker, and Calculating means 107 for calculating correction data for correcting the correction data and supplying it to the control means as a control signal, a transmitter 108, and converting a signal from the transmitter into a digital signal to the control means as a control signal. And analog / digital conversion means 109 for supplying.
【００１２】筐体と話者の耳との位置関係とは、筐体と
話者の耳とが接触した状態、一部接触若しくは非接触で
筐体と話者の耳との間にある程度の距離空間が存在する
状態を意味する。位置関係を検出する検出手段の態様と
して、筐体と話者の耳との接触圧力を検出する圧力セン
サ、距離を検出する距離センサ、温度を検出する温度セ
ンサ、筐体と話者の耳との間の音声信号を取得するマイ
クロホン等が挙げられる。検出手段を圧力センサとする
ことで、接触の有無を圧力で検出して位置関係を検出す
ることができる。また、距離センサとすることで、位置
関係を距離で検出することができるとともに、筐体と話
者の耳との実際の距離に応じて最適な周波数補正が可能
となる。また、温度センサとすることで、接触の有無を
温度で検出することができるとともに、筐体と話者の耳
との実際の距離に比例する温度に応じて最適な周波数補
正が可能となる。さらに、マイクロホンとすることで、
位置関係を筐体と話者の耳との間の距離空間における音
声信号の周波数で検出することができるとともに、距離
空間の発生による外部からの信号等を考慮し、外部信号
が加重された周波数を差分情報として用い、予めキャン
セルしておくことで最適な周波数補正が可能となる。検
出手段は、上記のうちの一つを単独で用いてもよく、複
数を組み合わせて用いてもよい。The positional relationship between the housing and the ears of the speaker means that the housing and the ears of the speaker are in contact with each other, and a certain degree of contact or non-contact occurs between the housing and the ears of the speaker. This means that a metric space exists. As an aspect of the detecting means for detecting the positional relationship, a pressure sensor for detecting a contact pressure between the housing and the ear of the speaker, a distance sensor for detecting the distance, a temperature sensor for detecting the temperature, the housing and the ear of the speaker. Microphone that acquires an audio signal during the period. By using a pressure sensor as the detecting means, it is possible to detect the presence / absence of contact by pressure and detect the positional relationship. In addition, by using a distance sensor, the positional relationship can be detected by distance, and optimal frequency correction can be performed according to the actual distance between the housing and the ear of the speaker. In addition, by using a temperature sensor, the presence or absence of contact can be detected based on the temperature, and optimal frequency correction can be performed according to a temperature proportional to the actual distance between the housing and the ear of the speaker. Furthermore, by using a microphone,
The positional relationship can be detected by the frequency of the audio signal in the distance space between the casing and the ear of the speaker, and the frequency at which the external signal is weighted in consideration of external signals due to the generation of the distance space. Is used as difference information, and canceling out in advance enables optimal frequency correction. As the detection means, one of the above may be used alone, or a plurality of them may be used in combination.
【００１３】以上説明した周波数補正は、筐体と話者の
耳との位置関係に基づく使用状態に対応する場合である
が、さらに、使用環境に対応するようにしても良い。例
えば、駅のホームにおける高騒音下では、受話器から再
生される信号が不明瞭となる場合がある。そこで、図１
において、送話器１０８より取得した環境騒音をアナロ
グ／ディジタル変換手段１０９を介して制御信号として
制御手段１０５に入力し、制御手段１０５が環境騒音を
考慮した制御信号に基づいて複数の補正データから１つ
の補正データを選択する。さらに、算出手段１０７で算
出した修正データに基づいて補正データを修正すること
で、使用状態に基づく周波数補正に対し使用環境に基づ
く周波数補正を加味して、受話器から再生される信号の
周波数をより最適に補正することができる。Although the frequency correction described above corresponds to the use state based on the positional relationship between the housing and the ear of the speaker, it may be further adapted to the use environment. For example, a signal reproduced from a receiver may become unclear under high noise at a platform of a station. Therefore, FIG.
, The environmental noise obtained from the transmitter 108 is input to the control means 105 as a control signal via the analog / digital conversion means 109, and the control means 105 outputs a plurality of correction data based on the control signal in consideration of the environmental noise. One piece of correction data is selected. Further, by correcting the correction data based on the correction data calculated by the calculating means 107, the frequency of the signal reproduced from the receiver can be further increased by taking into account the frequency correction based on the use environment in addition to the frequency correction based on the use state. The correction can be made optimally.
【００１４】なお、図１に示した実施の形態では、筐体
内に電話機の全ての構成を含む場合を示しているが、少
なくとも受話器を他の構成とは別の筐体に収容するセパ
レート型の電話機としても良い。Although the embodiment shown in FIG. 1 shows a case where all the components of the telephone are included in the housing, a separate type in which at least the handset is housed in a different housing from the other components is shown. It is good as a telephone.
【００１５】[0015]
【発明の効果】以上説明したように、本発明によれば、
変動する使用状態を検出し、この検出結果に基づいて算
出した修正データで補正データを修することにより、適
応的な周波数補正を可能にし、変動する使用状態に追随
して良好な音声品質を得ることができる。As described above, according to the present invention,
By detecting a fluctuating usage state and correcting the correction data with correction data calculated based on the detection result, adaptive frequency correction is enabled, and good voice quality is obtained following the fluctuating usage state. be able to.
【図１】本発明の一実施の形態に係る電話機の構成を示
すブロック図。FIG. 1 is a block diagram showing a configuration of a telephone according to an embodiment of the present invention.
【図２】従来の電話機の構成を示すブロック図。FIG. 2 is a block diagram showing a configuration of a conventional telephone.
１００ 筐体 １０１ 受話器 １０２ アンプ １０３ ディジタル／アナログ変換手段 １０４ 補正手段 １０５ 制御手段 １０６ 検出手段 １０７ 算出手段 １０８ 送話器 １０９ アナログ／ディジタル変換手段 REFERENCE SIGNS LIST 100 housing 101 receiver 102 amplifier 103 digital / analog conversion means 104 correction means 105 control means 106 detection means 107 calculation means 108 transmitter 109 analog / digital conversion means
───────────────────────────────────────────────────── フロントページの続き (72)発明者 松浦 洋嗣 神奈川県横浜市港北区綱島東四丁目３番１ 号 松下通信工業株式会社内 Ｆターム(参考） 5K027 AA11 BB03 DD14 DD18 EE11 5K067 AA23 BB04 FF25 FF34 ────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Yoji Matsuura 3-1, Tsunashimahigashi, Kohoku-ku, Yokohama-shi, Kanagawa Prefecture F-term in Matsushita Communication Industrial Co., Ltd. 5K027 AA11 BB03 DD14 DD18 EE11 5K067 AA23 BB04 FF25 FF34
Claims (7)
受話器へ供給する信号をアナログ信号に変換するディジ
タル／アナログ変換手段と、前記ディジタル／アナログ
変換手段へ供給する信号の周波数特性を補正する補正手
段と、前記補正手段に設定する補正データを制御信号に
基づき選択制御する制御手段と、を備える電話機におい
て、 前記筐体と話者の耳との位置関係を検出する検出手段
と、 前記検出手段の検出結果に応じて前記補正データを修正
する修正データを算出して前記制御手段に前記制御信号
として供給する算出手段と、を具備したことを特徴とす
る電話機。1. A housing having at least a handset, digital / analog conversion means for converting a signal supplied to the handset to an analog signal, and correction means for correcting frequency characteristics of a signal supplied to the digital / analog conversion means And a control means for selecting and controlling the correction data set in the correction means based on a control signal, wherein the detection means detects a positional relationship between the housing and the ear of a speaker; and A telephone set comprising: calculation means for calculating correction data for correcting the correction data in accordance with a detection result and supplying the correction data to the control means as the control signal.
の接触圧力を検出する圧力センサであることを特徴とす
る請求項１記載の電話機。2. The telephone according to claim 1, wherein said detecting means is a pressure sensor for detecting a contact pressure between said housing and a speaker's ear.
の距離を検出する距離センサであることを特徴とする請
求項１または請求項２記載の電話機。3. The telephone according to claim 1, wherein said detecting means is a distance sensor for detecting a distance between said housing and a speaker's ear.
ンサであることを特徴とする請求項１ないし請求項３の
何れか１項記載の電話機。4. The telephone according to claim 1, wherein said detecting means is a temperature sensor for detecting a temperature.
信号を取得するマイクロフォンであることを特徴とする
請求項１ないし請求項４の何れか１項記載の電話機。5. The telephone according to claim 1, wherein the detection unit is a microphone that acquires a voice signal near the handset.
ジタル信号に変換し、前記補正データの選択のための制
御信号として前記制御手段に供給するアナログ／ディジ
タル変換手段と、を備え、前記送話器が取得する環境騒
音を前記制御信号として用いることを特徴とする請求項
１ないし請求項５の何れか１項記載の電話機。6. A transmitter, and an analog / digital converter for converting a signal from the transmitter into a digital signal and supplying the digital signal to the control unit as a control signal for selecting the correction data. The telephone according to any one of claims 1 to 5, wherein environmental noise acquired by the transmitter is used as the control signal.
受話器へ供給する信号をアナログ信号に変換するディジ
タル／アナログ変換手段と、前記ディジタル／アナログ
変換手段へ供給する信号の周波数特性を補正する補正手
段と、前記補正手段に設定される補正データを制御信号
に基づき選択制御する制御手段と、を備える電話機の音
声信号周波数補正方法において、 前記筐体と話者の耳との位置関係を検出し、検出結果に
応じて前記補正データを修正する修正データを算出して
前記制御手段に前記制御信号として供給する、ことを特
徴とする電話機の音声信号周波数補正方法。7. A housing having at least a handset, digital / analog conversion means for converting a signal supplied to the handset to an analog signal, and correction means for correcting frequency characteristics of the signal supplied to the digital / analog conversion means. And a control unit for selectively controlling correction data set in the correction unit based on a control signal, in a voice signal frequency correction method for a telephone, comprising: detecting a positional relationship between the housing and a speaker's ear; A method for correcting a voice signal frequency of a telephone, comprising: calculating correction data for correcting the correction data in accordance with a detection result and supplying the correction data to the control means as the control signal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2001171212A JP2002368839A (en) | 2001-06-06 | 2001-06-06 | Telephone and voice signal frequency correction method for the telephone |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2001171212A JP2002368839A (en) | 2001-06-06 | 2001-06-06 | Telephone and voice signal frequency correction method for the telephone |
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| Publication Number | Publication Date |
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| JP2002368839A true JP2002368839A (en) | 2002-12-20 |
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| Application Number | Title | Priority Date | Filing Date |
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| JP2001171212A Pending JP2002368839A (en) | 2001-06-06 | 2001-06-06 | Telephone and voice signal frequency correction method for the telephone |
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| JP (1) | JP2002368839A (en) |
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