WO2011099085A1 - Fmラジオ受信装置 - Google Patents
Fmラジオ受信装置 Download PDFInfo
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- WO2011099085A1 WO2011099085A1 PCT/JP2010/000904 JP2010000904W WO2011099085A1 WO 2011099085 A1 WO2011099085 A1 WO 2011099085A1 JP 2010000904 W JP2010000904 W JP 2010000904W WO 2011099085 A1 WO2011099085 A1 WO 2011099085A1
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04H—BROADCAST COMMUNICATION
- H04H40/00—Arrangements specially adapted for receiving broadcast information
- H04H40/18—Arrangements characterised by circuits or components specially adapted for receiving
- H04H40/27—Arrangements characterised by circuits or components specially adapted for receiving specially adapted for broadcast systems covered by groups H04H20/53 - H04H20/95
- H04H40/36—Arrangements characterised by circuits or components specially adapted for receiving specially adapted for broadcast systems covered by groups H04H20/53 - H04H20/95 specially adapted for stereophonic broadcast receiving
- H04H40/45—Arrangements characterised by circuits or components specially adapted for receiving specially adapted for broadcast systems covered by groups H04H20/53 - H04H20/95 specially adapted for stereophonic broadcast receiving for FM stereophonic broadcast systems receiving
- H04H40/72—Arrangements characterised by circuits or components specially adapted for receiving specially adapted for broadcast systems covered by groups H04H20/53 - H04H20/95 specially adapted for stereophonic broadcast receiving for FM stereophonic broadcast systems receiving for noise suppression
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04H—BROADCAST COMMUNICATION
- H04H40/00—Arrangements specially adapted for receiving broadcast information
- H04H40/18—Arrangements characterised by circuits or components specially adapted for receiving
- H04H40/27—Arrangements characterised by circuits or components specially adapted for receiving specially adapted for broadcast systems covered by groups H04H20/53 - H04H20/95
- H04H40/36—Arrangements characterised by circuits or components specially adapted for receiving specially adapted for broadcast systems covered by groups H04H20/53 - H04H20/95 specially adapted for stereophonic broadcast receiving
- H04H40/45—Arrangements characterised by circuits or components specially adapted for receiving specially adapted for broadcast systems covered by groups H04H20/53 - H04H20/95 specially adapted for stereophonic broadcast receiving for FM stereophonic broadcast systems receiving
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04H—BROADCAST COMMUNICATION
- H04H40/00—Arrangements specially adapted for receiving broadcast information
- H04H40/18—Arrangements characterised by circuits or components specially adapted for receiving
- H04H40/27—Arrangements characterised by circuits or components specially adapted for receiving specially adapted for broadcast systems covered by groups H04H20/53 - H04H20/95
- H04H40/36—Arrangements characterised by circuits or components specially adapted for receiving specially adapted for broadcast systems covered by groups H04H20/53 - H04H20/95 specially adapted for stereophonic broadcast receiving
- H04H40/45—Arrangements characterised by circuits or components specially adapted for receiving specially adapted for broadcast systems covered by groups H04H20/53 - H04H20/95 specially adapted for stereophonic broadcast receiving for FM stereophonic broadcast systems receiving
- H04H40/63—Arrangements characterised by circuits or components specially adapted for receiving specially adapted for broadcast systems covered by groups H04H20/53 - H04H20/95 specially adapted for stereophonic broadcast receiving for FM stereophonic broadcast systems receiving for separation improvements or adjustments
Definitions
- the present invention relates to an FM radio receiving apparatus that detects a correlation between channels in a received FM (Frequency Modulation) stereo broadcast wave and controls the degree of separation of stereo signals.
- FM Frequency Modulation
- the stereo pilot signal is affected by the distortion, and a problem called “stereo distortion” in which stereo separation is not performed correctly occurs.
- stereo distortion a problem in which stereo separation is not performed correctly occurs.
- the separation of the left and right signals is controlled according to the state of noise generation, and when the stereo sense of presence that spreads widely in the left and right sound fields is high, the sound quality is suppressed by suppressing monauralization, conversely When the stereo sense of presence is small and the sense of sound is small, the stereo distortion has been effectively suppressed by aggressively monauralizing.
- the above control for limiting the stereo separation degree is performed in order to suppress the stereo distortion.
- This control for limiting the stereo separation degree is effective in suppressing stereo distortion, but there is a problem in sound quality that the sense of realism on the left and right is impaired.
- there is a trade-off relationship between the suppression of stereo distortion and the presence or absence of a sense of presence is in accordance with the received radio wave environment. It is necessary to perform appropriate control based on
- the present invention has been made to solve the above-described problems. While reducing the memory capacity required for the correlation value detection process when controlling the stereo separation, stereo noise suppression and stereo presence
- An object of the present invention is to provide an FM radio receiving apparatus capable of appropriate control with a balance of the above.
- the present invention is an FM radio receiving apparatus that detects a correlation between channels in a received FM stereo broadcast wave and performs control for limiting the degree of separation of stereo signals, and separates the stereo signals into audio signals for each channel.
- a stereo decoding unit, a binarization processing unit that binarizes each audio signal of the channel separated by the stereo decoding unit, and a predetermined audio signal for each channel binarized by the binarization processing unit A correlation determination unit that accumulates the time and determines the degree of correlation based on the accumulated audio signal for each channel.
- the correlation determination unit accumulates the binarized audio signals for each channel for a predetermined time, and determines the degree of correlation based on the accumulated audio signals for each channel. For this reason, for example, as the degree of correlation between channels increases, it is possible to suppress the adverse effect of losing the stereo sense of reality by increasing the limit of the stereo separation degree.
- the correlation determination unit stores the binarized audio signal of each channel after stereo separation for a predetermined time, and then performs correlation determination to thereby determine the level of the audio signal for each channel stored for a predetermined period. Compared to the conventional example in which the correlation determination is performed by comparing the values, the memory capacity required for storing the stereo signal can be reduced, and the accuracy of correlation detection can be improved.
- FIG. 1 is a block diagram showing a configuration of an FM radio receiving apparatus according to Embodiment 1 of the present invention.
- the FM radio receiver 1a according to the first embodiment includes an antenna 11, an RF (Radio Frequency) amplifier 12, a frequency converter (MIX) 13, a local oscillator (LO) 14, and the like.
- RF Radio Frequency
- MIX frequency converter
- LO local oscillator
- BPF intermediate frequency filter
- IF-AGC AMP limiter intermediate frequency amplifier
- LPF prefilter
- a / D analog / digital converter
- a stereo demodulator 20 a stereo decoder 21, a low-pass filter processing unit (HCC; high cut control) 22, a digital / analog converter (D / A) 23, an audio amplifier 24, and a speaker (SP). 25 and the stereo separation degree control unit 30.
- HCC low-pass filter processing unit
- D / A digital / analog converter
- SP speaker
- the FM broadcast wave received by the antenna 11 is amplified by the RF amplifier 12 and then frequency-converted by the frequency converter 13, and unnecessary components such as adjacent channel waves are removed by the intermediate frequency filter 15. Is done.
- the FM broadcast wave that has passed through the intermediate frequency filter 15 is limited in amplitude by the limiter intermediate frequency amplifier 16, then the high frequency component of the intermediate frequency is removed by the pre-filter 17, and converted into a digital signal by the analog / digital converter 18. Converted.
- the FM broadcast wave converted into a digital signal by the analog / digital converter 18 (hereinafter referred to as a digital FM wave) is FM demodulated by the FM demodulator 19 and then stereo demodulated by the stereo demodulator 20 and stereo decoder.
- the signal component in the high frequency region is filtered by the low-pass filter processing unit 22, converted into an analog audio signal by the digital / analog converter 23, and further output to the speaker 25 via the audio amplifier 24.
- the digital FM wave demodulated by the stereo demodulator 20 is supplied to the stereo separation degree control unit 30 in addition to the stereo decoder 21 described above.
- the stereo separation degree control unit 30 separates the stereo demodulated signal output from the stereo demodulator 20 into audio signals for each channel, binarizes each audio signal of the separated channel, and binarizes the audio for each channel. It has a function of accumulating signals for a predetermined time and determining the degree of correlation based on the accumulated audio signal for each channel.
- the stereo separation degree control unit 30 is realized by, for example, a microcomputer, and the CPU realizes the above-described functions by sequentially reading and executing a program recorded in a built-in memory. For this reason, the program structure can be shown in the stereo decoding unit 301, the binarization processing unit 302, and the correlation determination unit 303 in a functional manner.
- the stereo decoding unit 301 has a function of separating the demodulated digital FM wave input from the stereo demodulator 20 into an LR audio signal for each channel by, for example, matrix processing and outputting the LR audio signal to the binarization processing unit 302. .
- the binarization processing unit 302 has a function of binarizing the LR audio signal separated by the stereo decoding unit 301 by comparison with a threshold value and outputting the binarized signal to the correlation determination unit 303.
- the correlation determination unit 303 accumulates the LR audio signal binarized by the binarization processing unit 302 in a memory (not shown) for a predetermined time, and based on the accumulated audio signal for each channel, The degree of correlation is determined.
- the correlation determination unit 303 further has a function of controlling the degree of stereo separation when the stereo decoder 21 separates digital FM waves into stereo signals according to the determined degree of correlation.
- FIG. 2 is a flowchart showing the stereo separation control operation of FM radio receiver 1a according to the first embodiment of the present invention.
- the operation of the FM radio receiving apparatus 1a according to the first embodiment shown in FIG. 1 will be described in detail with reference to FIG.
- the stereo separation degree control unit 30 first takes in the digital FM wave (stereo demodulated signal) demodulated by the stereo demodulator 20 and activates the stereo decoding unit 301 (step ST201).
- Stereo decoding section 301 separates the captured stereo demodulated signal into LR audio signals by matrix processing and outputs the result to binarization processing section 302 (step ST202).
- the binarization processing unit 302 binarizes each input LR audio signal by comparison with a predefined threshold value and stores it in the built-in memory (step ST203). Note that the binarized LR signal is accumulated for a predetermined period in order to avoid a sense of incongruity due to frequent fluctuations in the degree of separation accompanying the received radio wave environment described later.
- correlation determination section 303 When binarized LR signals for a predetermined period are accumulated in the built-in memory (step ST204 “YES”), correlation determination section 303 counts the number of matches between the L signal and the R signal (step ST204). ST205). Subsequently, the correlation determination unit 303 determines the degree of correlation between the LR signals by comparing the counted match number ⁇ with a predefined correlation determination threshold value (match number ⁇ ) (step ST206).
- step ST206 determines that the number of matches between the L signal and the R signal after LR separation is equal to or greater than the correlation determination threshold ( ⁇ ⁇ ⁇ ) (step ST206 “YES”)
- the stereo decoder 21 inputs When the stereo demodulated signal is subjected to LR separation, the degree of stereo separation is controlled in the direction of monauralization (step ST207).
- the stereo decoder 21 inputs When the stereo demodulated signal is subjected to LR separation, the stereo separation degree is controlled so as to suppress monauralization (step ST208).
- the stereo separation degree control unit 30 separates the LR audio signal by the stereo decoding unit 301, and determines the correlation.
- the degree of correlation between the LR signals is determined by counting the number of matching LR signals binarized by the unit 303 and accumulated for a predetermined period. For this reason, compared with the conventional case where the signal level is used, it is less affected by noise that occurs suddenly, and it is possible to detect the correlation with high accuracy in light of the actual hearing.
- the degree of correlation between channels increases, the restriction of stereo separation becomes stronger, so it is possible to suppress the negative effects of loss of stereo presence, and to balance stereo noise suppression with stereo presence. Appropriate control is possible.
- the required memory capacity and circuit scale can be greatly reduced compared to the conventional example in which correlation determination is performed based on the signal level.
- FIG. FIG. 3 is a block diagram showing a configuration of an FM radio receiving apparatus 1b according to Embodiment 2 of the present invention.
- the structural difference from the first embodiment shown in FIG. 1 is that a content type determination unit 304 is further added to the stereo separation degree control unit 30, and the output of the content type determination unit 304 Is configured to control the separation of the left and right channels by the stereo decoder 21.
- Other configurations are the same as those of the FM radio receiving apparatus 1a according to the first embodiment shown in FIG.
- the content type determination unit 304 has a function of determining the type of received content according to the degree of correlation determined by the correlation determination unit 303.
- the correlation determination unit 303 outputs the degree of correlation by counting the number of matches ⁇ after LR separation and comparing it with the correlation determination threshold ⁇ , and the content type determination unit If the degree of correlation (number of matches) 304 is large over a predetermined period, it can be determined that the content is content that does not require a relatively stereo sense of reality such as “news”, while on the other hand, over the predetermined period. When the degree of correlation is small, it is determined that the content is a content that requires a stereo presence such as “music”. Based on the determination result, the stereo decoder 21 controls the LR separation.
- the content type determination unit 304 determines the type of received content according to the degree of correlation determined by the correlation determination unit 303, and the stereo decoder 21 The separation degree of the stereo signal is controlled based on the determined content type.
- the content type determination unit 304 determines that the content does not require a stereo presence compared to music or the like, such as news, for example, the content type determination unit 304 positively converts the content to monaural, for example, a stereo presence such as music.
- an FM radio receiver 1b capable of appropriate control that balances stereo noise suppression and stereo presence according to the content content. Can be provided.
- FIG. 4 is a block diagram showing a configuration of an FM radio receiving apparatus 1c according to Embodiment 3 of the present invention.
- the output is configured to control the cut-off frequency fc by the low-pass filter processing unit (HCC; high cut control) 22.
- HCC low-pass filter processing unit
- Other configurations are the same as those of the FM radio receiving apparatus 1a of the first embodiment.
- the content type determination unit 305 has a function of determining the type of received content according to the degree of correlation determined by the correlation determination unit 303. In addition, the content type determination unit 305 can determine that the content requires a sound quality such as music when the degree of correlation is small over a predetermined period, and conversely, when the degree of correlation is large, It can be determined that the content is relatively unrequired.
- the low-pass filter processing unit 22 controls the cut-off frequency fc of the low-pass filter based on the content type determined by the content type determination unit 305.
- the content type determination unit 305 determines that the content is music, the music is considered to have many high-frequency components, and therefore, a decrease in the cut-off frequency fc is suppressed to maintain a certain sound quality. If it is determined that there is a news, it is considered that the news has relatively few high-frequency components, and therefore, control is performed to actively lower the cutoff frequency fc.
- FIG. 5 is a flowchart showing the stereo separation control operation of the FM radio receiving apparatus 1c according to the third embodiment of the present invention.
- the operation of the FM radio receiving apparatus 1c according to the third embodiment shown in FIG. 4 will be described in detail with reference to FIG.
- the stereo separation degree control unit 30 takes in the digital FM wave (stereo demodulated signal) demodulated by the stereo demodulator 20, activates the stereo decoding unit 301 (step ST501), and then determines the correlation determination unit.
- the operation until 303 counts the LR coincidence number ⁇ (step ST505) is the same as the operation of steps ST201 to ST205 of the first embodiment, and thus description thereof is omitted to avoid duplication.
- the content type determination unit 305 further performs content type determination based on the degree of correlation delivered from the correlation determination unit 303 (step ST506). If the content type determination unit 305 determines that the content requires a sound quality such as music when the degree of correlation is small over a predetermined period (step ST507 “YES”), the music is compared with news or the like. Since many high-frequency components are included, the low-pass filter processing unit 22 performs control to maintain the sound quality by suppressing the decrease in the cut-off frequency fc (step ST508). On the other hand, when the degree of correlation is large over a predetermined period, content type determination section 305 determines that the content is relatively content-free such as news (step ST507 “NO”). Since news has relatively few high-frequency components, the low-pass filter processing unit 22 performs control to actively lower the cutoff frequency fc in accordance with the determination result (step ST509).
- the content type determination unit 305 determines the type of received content according to the degree of correlation determined by the correlation determination unit 303, and low-pass filter processing is performed.
- the unit 22 controls the cut-off frequency fc based on the determined content type, so that the cut-off frequency fc is lowered when it is determined that the content does not require relatively high sound quality such as news.
- the high frequency component is attenuated to suppress noise, and when it is determined that the content requires a sound quality such as music, the decrease in the cut-off frequency fc is suppressed to maintain the sound quality.
- the FM radio receiving apparatus 1c capable of appropriate control in which the balance between stereo noise suppression and sound quality is balanced according to the content content.
- FIG. FIG. 6 is a block diagram showing a configuration of an FM radio receiving apparatus 1d according to Embodiment 4 of the present invention.
- the structural difference from the first embodiment shown in FIG. 1 is that a content type determination unit 306 is further added to the stereo separation degree control unit 30.
- the stereo separation degree by the stereo decoder 21 and the cut-off frequency fc by the low-pass filter processing unit 22 are controlled according to the output.
- Other configurations are the same as those of the FM radio receiving apparatus 1a of the first embodiment.
- the content type determination unit 306 has a function of determining the type of received content according to the degree of correlation determined by the correlation determination unit 303.
- the low-pass filter processing unit 22 has a function of controlling the cut-off frequency fc of the low-pass filter based on the content type determined by the content type determination unit 306.
- the content type determination unit 306 determines that the content is relatively free of stereo presence, such as news, and the correlation over a predetermined period. If the level of the content is small, for example, it is determined that the content requires a stereo presence such as music.
- the stereo decoder 21 controls the separation degree of the stereo signal according to the result of the content type determination.
- the low-pass filter processing unit 22 is considered to have relatively high frequency components in the music, and therefore the low-pass filter cutoff
- the news is the news when the sound quality is maintained by suppressing the decrease in the frequency fc
- the content type determination unit 306 determines the type of received content according to the degree of correlation determined by the correlation determination unit 303, and the stereo decoder 21 The stereo signal separation degree is controlled based on the determined content type, and the low-pass filter processing unit 22 controls the cutoff frequency of the low-pass filter based on the determined content type. . In this way, it is possible to provide an FM radio receiving apparatus 1d that can perform appropriate control that balances suppression of stereo noise, realism, and sound quality according to the content.
- the content is determined to be content that does not require a sense of realism on the left and right compared to music, etc., as in news, and that does not require relatively high sound quality, the content will be positively converted to monaural.
- the control is performed to lower the cut-off frequency fc, and it is determined that the content is music-like content, the control of the stereo noise and the stereo are performed by performing control to suppress monauralization and the cut-off frequency fc. Appropriate control that balances the sense of reality and sound quality becomes possible.
- all the functions of the stereo separation degree control unit 30 may be realized by software, or at least a part thereof may be realized by hardware.
- the stereo separation degree control unit 30 separates the stereo signal into audio signals for each channel, binarizes each audio signal of the separated channel, and accumulates the binarized audio signals for each channel for a predetermined time.
- the data processing for determining the degree of correlation based on the accumulated audio signal for each channel and controlling the separation degree of the stereo signal may be realized on a computer by one or a plurality of programs, and at least a part thereof It may be realized by hardware.
- the FM radio receiver (1a, 1b, 1c, 1d) of the present invention separates the received FM stereo broadcast wave stereo signal into audio signals for each channel, and binarizes each audio signal of the separated channel.
- the binarized audio signal for each channel is accumulated for a predetermined time, and the degree of correlation of the audio signal between channels is determined based on the accumulated audio signal for each channel, and according to the determined degree of correlation Since the degree of separation for each channel of the stereo signal is controlled, for example, as the degree of correlation between the channels becomes higher, the limitation of the stereo separation degree is strengthened, thereby preventing the adverse effect of losing the stereo presence.
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Abstract
Description
実施の形態1.
図1は、この発明の実施の形態1に係るFMラジオ受信装置の構成を示すブロック図である。図1に示されるように、実施の形態1に係るFMラジオ受信装置1aは、アンテナ11と、RF(Radio Frequency)増幅器12と、周波数変換器(MIX)13と、局部発振器(LO)14と、中間周波フィルタ(BPF)15と、リミッタ中間周波増幅機(IF-AGC AMP)16と、前置フィルタ(LPF)17と、アナログ・デジタル変換器(A/D)18と、FM復調器19と、ステレオ復調器20と、ステレオデコーダ21と、低域通過フィルタ処理部(HCC;ハイカットコントロール)22と、デジタル・アナログ変換器(D/A)23と、音声増幅器24と、スピーカ(SP)25と、ステレオ分離度制御部30と、により構成される。
以下、図2を参照しながら、図1に示す実施の形態1に係るFMラジオ受信装置1aの動作について詳細に説明する。
図3は、この発明の実施の形態2に係るFMラジオ受信装置1bの構成を示すブロック図である。図3において、図1に示す実施の形態1との構成上の差異は、ステレオ分離度制御部30に、更に、コンテンツ種別判定部304が付加されたことにあり、コンテンツ種別判定部304の出力がステレオデコーダ21による左右チャンネルの分離度を制御する構成とした。他の構成は、図1に示す実施の形態1のFMラジオ受信装置1aと同様である。
図4は、この発明の実施の形態3に係るFMラジオ受信装置1cの構成を示すブロック図である。図4において、図1に示す実施の形態1との構成上の差異は、ステレオ分離度制御部30に、更に、コンテンツ種別判定部305が付加されたことにあり、このコンテンツ種別判定部305の出力が低域通過フィルタ処理部(HCC;ハイカットコントロール)22によるカットオフ周波数fcを制御する構成とした。他の構成は、実施の形態1のFMラジオ受信装置1aと同様である。
図6は、この発明の実施の形態4に係るFMラジオ受信装置1dの構成を示すブロック図である。図6において、図1に示す実施の形態1との構成上の差異は、ステレオ分離度制御部30に、更に、コンテンツ種別判定部306が付加されたことにあり、このコンテンツ種別判定部306の出力に応じて、ステレオデコーダ21によるステレオ分離度、及び低域通過フィルタ処理部22によるカットオフ周波数fcが制御される構成とした。他の構成は、実施の形態1のFMラジオ受信装置1aと同様である。
Claims (4)
- FMステレオ放送波を受信するFMラジオ受信装置において、
受信したFMステレオ放送波のステレオ信号をチャンネル毎の音声信号に分離するステレオデコード部と、
このステレオデコード部で分離した前記チャンネルの各音声信号をそれぞれ2値化する2値化処理部と、
この2値化処理部で2値化した前記チャンネル毎の音声信号を所定時間分蓄積し、この蓄積したチャンネル毎の音声信号に基づいて、前記チャンネル間の音声信号の相関の程度を判定する相関判定部とを備え、
前記相関判定部で判定した相関の程度に応じて、前記ステレオ信号の前記チャンネル毎の分離度を制御することを特徴とするFMラジオ受信装置。 - FMステレオ放送波を受信するFMラジオ受信装置において、
受信したFMステレオ放送波のステレオ信号をチャンネル毎の音声信号に分離するステレオデコード部と、
このステレオデコード部で分離した前記チャンネルの各音声信号をそれぞれ2値化する2値化処理部と、
この2値化処理部で2値化した前記チャンネル毎の音声信号を所定時間分蓄積し、この蓄積したチャンネル毎の音声信号に基づいて、前記チャンネル間の音声信号の相関の程度を判定する相関判定部と、
前記相関判定部で判定した相関の程度に応じて受信コンテンツの種別を判定するコンテンツ種別判定部とを備え、
前記コンテンツ種別判定部で判定した前記受信コンテンツの種別に応じて、前記ステレオ信号の前記チャンネル毎の分離度を制御することを特徴とするFMラジオ受信装置。 - FMステレオ放送波を受信するFMラジオ受信装置において、
受信したFMステレオ放送波のステレオ信号をチャンネル毎の音声信号に分離するステレオデコード部と、
このステレオデコード部で分離した前記チャンネルの各音声信号をそれぞれ2値化する2値化処理部と、
この2値化処理部で2値化した前記チャンネル毎の音声信号を所定時間分蓄積し、この蓄積したチャンネル毎の音声信号に基づいて、前記チャンネル間の音声信号の相関の程度を判定する相関判定部と、
前記相関判定部で判定した相関の程度に応じて受信コンテンツの種別を判定するコンテンツ種別判定部とを備え、
チャンネル毎に分離した前記ステレオ信号の高域周波数成分を濾波する低域通過フィルタ部のカットオフ周波数を、前記コンテンツ種別判定部で判定した前記受信コンテンツの種別に応じて制御することを特徴とするFMラジオ受信装置。 - チャンネル毎に分離した前記ステレオ信号の高域周波数成分を濾波する低域通過フィルタ部のカットオフ周波数を、前記コンテンツ種別判定部で判定した前記受信コンテンツの種別に応じて制御することを特徴とする請求項2記載のFMラジオ受信装置。
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
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DE112010005266T DE112010005266T5 (de) | 2010-02-15 | 2010-02-15 | FM-Rundfunk-Empfangsvorrichtung |
US13/501,441 US20120201387A1 (en) | 2010-02-15 | 2010-02-15 | Fm radio receiving apparatus |
PCT/JP2010/000904 WO2011099085A1 (ja) | 2010-02-15 | 2010-02-15 | Fmラジオ受信装置 |
JP2011553656A JPWO2011099085A1 (ja) | 2010-02-15 | 2010-02-15 | Fmラジオ受信装置 |
CN2010800595996A CN102687432A (zh) | 2010-02-15 | 2010-02-15 | Fm广播接收装置 |
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PCT/JP2010/000904 WO2011099085A1 (ja) | 2010-02-15 | 2010-02-15 | Fmラジオ受信装置 |
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PCT/JP2010/000904 WO2011099085A1 (ja) | 2010-02-15 | 2010-02-15 | Fmラジオ受信装置 |
Country Status (5)
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US (1) | US20120201387A1 (ja) |
JP (1) | JPWO2011099085A1 (ja) |
CN (1) | CN102687432A (ja) |
DE (1) | DE112010005266T5 (ja) |
WO (1) | WO2011099085A1 (ja) |
Families Citing this family (2)
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CN107659888A (zh) * | 2017-08-21 | 2018-02-02 | 广州酷狗计算机科技有限公司 | 识别伪立体声音频的方法、装置及存储介质 |
KR20210016976A (ko) * | 2019-08-06 | 2021-02-17 | 현대자동차주식회사 | 차량용 인포테인먼트 장치 및 그 제어 방법 |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0879204A (ja) * | 1994-09-02 | 1996-03-22 | Fujitsu Ten Ltd | 受信機 |
JP2000332574A (ja) * | 1999-05-20 | 2000-11-30 | Nec Corp | 適応フィルタ、適応フィルタの制御方法及びプログラムを記憶した記憶媒体 |
JP2001060923A (ja) * | 1999-08-24 | 2001-03-06 | Alpine Electronics Inc | Fm放送受信機 |
JP2002090451A (ja) * | 2000-09-19 | 2002-03-27 | Oki Electric Ind Co Ltd | 物標追尾方法及びその装置 |
JP2003281593A (ja) * | 2002-03-20 | 2003-10-03 | Mitsubishi Electric Corp | 硬貨識別装置と硬貨登録装置と硬貨判定装置、並びに硬貨判定方法 |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH08178673A (ja) | 1994-12-26 | 1996-07-12 | Tokin Corp | 圧電振動ジャイロ用振動子 |
DE10139248C2 (de) * | 2001-08-09 | 2003-11-27 | Harman Becker Automotive Sys | Verfahren zur Unterdrückung von Störungen im Empfangssignal eines Stereorundfunkempfängers sowie Stereorundfunkempfänger |
JP4012506B2 (ja) * | 2001-08-24 | 2007-11-21 | 株式会社ケンウッド | 信号の周波数成分を適応的に補間するための装置および方法 |
JP5202090B2 (ja) * | 2008-05-07 | 2013-06-05 | アルパイン株式会社 | サラウンド生成装置 |
JP2009300707A (ja) * | 2008-06-13 | 2009-12-24 | Sony Corp | 情報処理装置および方法、並びにプログラム |
-
2010
- 2010-02-15 WO PCT/JP2010/000904 patent/WO2011099085A1/ja active Application Filing
- 2010-02-15 CN CN2010800595996A patent/CN102687432A/zh active Pending
- 2010-02-15 JP JP2011553656A patent/JPWO2011099085A1/ja active Pending
- 2010-02-15 DE DE112010005266T patent/DE112010005266T5/de not_active Withdrawn
- 2010-02-15 US US13/501,441 patent/US20120201387A1/en not_active Abandoned
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0879204A (ja) * | 1994-09-02 | 1996-03-22 | Fujitsu Ten Ltd | 受信機 |
JP2000332574A (ja) * | 1999-05-20 | 2000-11-30 | Nec Corp | 適応フィルタ、適応フィルタの制御方法及びプログラムを記憶した記憶媒体 |
JP2001060923A (ja) * | 1999-08-24 | 2001-03-06 | Alpine Electronics Inc | Fm放送受信機 |
JP2002090451A (ja) * | 2000-09-19 | 2002-03-27 | Oki Electric Ind Co Ltd | 物標追尾方法及びその装置 |
JP2003281593A (ja) * | 2002-03-20 | 2003-10-03 | Mitsubishi Electric Corp | 硬貨識別装置と硬貨登録装置と硬貨判定装置、並びに硬貨判定方法 |
Also Published As
Publication number | Publication date |
---|---|
DE112010005266T5 (de) | 2013-04-25 |
CN102687432A (zh) | 2012-09-19 |
JPWO2011099085A1 (ja) | 2013-06-13 |
US20120201387A1 (en) | 2012-08-09 |
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