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8170884 |
Use of voice-to-remaining audio (VRA) in consumer applications
Systems provide an audio/visual output to each of a plurality of listeners in a manner that permits individualized audio adjustment, wherein audio comprises a first signal that is substantially...
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8155362 |
Wireless listening system
A wireless listening system includes a base operable to receive an electrical signal corresponding to an audio signal, including the ring of an incoming telephone call, up-convert the audio signal...
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8126173 |
System and method for expanding multi-speaker playback
A method includes splitting and filtering a left input signal and a right input signal to produce a plurality of frequency sub-bands. Each of the frequency sub-bands includes a left sub-band signal...
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8116459 |
Enhanced method for signal shaping in multi-channel audio reconstruction
The present invention is based on the finding that a reconstructed output channel, reconstructed with a multi-channel reconstructor using at least one downmix channel derived by downmixing a...
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8112272 |
Sound source separation device, speech recognition device, mobile telephone, sound source separation method, and program
A sound source signal from a target sound source is allowed to be separated from a mixed sound which consists of sound source signals emitted from a plurality of sound sources without being...
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8111829 |
Method and apparatus for encoding and decoding stereo signal and multi-channel signal
Provided are a method and apparatus for encoding and decoding a stereo signal or a multi-channel signal. According to the method and apparatus, a stereo signal or a multi-channel signal can be...
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8108220 |
Techniques for accommodating primary content (pure voice) audio and secondary content remaining audio capability in the digital audio production process
The invention enables the inclusion of voice and remaining audio information at different parts of the audio production process. In particular, the invention embodies special techniques for...
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8103005 |
Primary-ambient decomposition of stereo audio signals using a complex similarity index
An audio signal is processed to derive primary and ambient components of the signal. The signal is first transformed to generate frequency-domain subband signals. Primary and ambient components are...
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8093841 |
System and method for faster response time in stereo/mono detection
An audio receiver may include a mono/stereo detector that causes the audio receiver to output either a monophonic or a stereophonic signal based on a difference between a pilot energy signal and a...
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8023659 |
Mixing system, method and program
In a situation where a plurality of virtual sound sources are fixedly located, a mixing system allows a listener to increase or decrease the sound volumes of the virtual sound sources with a simple...
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7889871 |
Apparatus for multichannel sound reproduction system
The sound reproduction of a multichannel sound reproduction system with a plurality of speakers which is connected to the output of an FM stereo receiver is controlled by a control signal derived...
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RE42093 |
Active audio compressing in telecommunication
An output reducing system for a telephone system, e.g., implemented in a headset, includes an input line and an output line, wherein the input line transmits an incoming signal to an output...
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7664271 |
Method and apparatus for processing sound signal
A method for processing sound signal including an L side enhanced difference signal comprising a sum of a signal being removed low frequency component from L−R signal and an L+R signal, an R side e...
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7486796 |
Stereo receiver for controlling continuously degree of separation
A stereo receiver of a simple structure is disclosed capable of continuously controlling the degree of separation of left and right voice signals in accordance with the level of electric field...
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7457420 |
Method and system for detecting signal modes in a broadcast audio transmission
A Japanese BTSC audio broadcast signal has three modes of transmission: mono, stereo, or dual mono. The control channel centering at 3.5 fH is one of the three channels in the J-BTSC signal, and...
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7337111 |
Use of voice-to-remaining audio (VRA) in consumer applications
Systems provide an audio/visual output to each of a plurality of listeners in a manner that permits individualized audio adjustment, wherein audio comprises a first signal that is substantially...
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7266501 |
Method and apparatus for accommodating primary content audio and secondary content remaining audio capability in the digital audio production process
The invention enables the inclusion of voice and remaining audio information at different parts of the audio production process. In particular, the invention embodies special techniques for...
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7260225 |
Method and device for processing a stereo audio signal
In a device for processing a stereo audio signal having a first channel and a second channel the stereo signal is at first analyzed to obtain a measure for a quantity of bits required by a coder to...
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7243073 |
Method for realizing virtual multi-channel output by spectrum analysis
A method for realizing virtual multi-channel by spectrum analysis is disclosed. The low-frequency-effect sound data is obtained by averaging sound data of left and right channels in the two-channel...
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7065218 |
Method of generating a left modified and a right modified audio signal for a stereo system
The invention relates to a method of generating a left modified and a right modified audio signal for a stereo system from multichannel audio signals (XL, XR, XLS, XRS, and XC) with a left and a...
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7065217 |
Apparatus and method for multichannel sound reproduction system
The sound reproduction of a multichannel sound reproduction system with a plurality of speakers which is connected to the output of an FM stereo receiver is controlled by a control signal derived...
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6859238 |
Scaling adjustment to enhance stereo separation
A demodulator (10) converts television signals to video baseband signals and audio baseband signals including stereo signals representing a right channel signal value and a left channel signal...
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6658116 |
Stereo radio receiver
A stereo radio receiver has a channel separation stage for setting an optimal channel separation of the left audio channel from the right audio channel, even under sufficient receiving field...
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6535608 |
Stereo broadcasting receiving device
A stereo broadcasting receiving device comprises pseudo stereo signal generation means for generating a pseudo left stereo signal and a pseudo right stereo signal from an L+R signal, first...
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6522750 |
Method and corresponding system for influencing the stereo channel separation of an audiosignal
A method for influencing the channel separation of an audio signal to be reproduced, obtained from a received radio signal, in a radio receiver, as well as a radio receiver for carrying out the...
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6295362 |
Direct digital synthesis of FM signals
A digital FM signal generator allows the generation of a modulated FM signal for broadcasting without the need for an analog modulator. The signal generator includes a digital signal processor...
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6173022 |
Synchronizing audio signal samples taken at different sampling rates
Audio signal samples taken at different sampling rates are synchronized. A plurality of channels of audio data are sampled at different rates and recognizable synchronization data are added to...
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6002774 |
Arrangement, a system, a circuit and a method for enhancing a stereo image
A stereophonic audio signal processing arrangement for variably enhancing a stereo image, wherein the stereo image enhancement is reduced at high signal levels so as to reduce distortion. The...
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5784465 |
Stereo receiver
The invention is directed to reducing noises of a low density without causing the listener to feel a sense of incongruity. A received signal is subjected to frequency discrimination. The sound...
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5771293 |
Switching arrangement for mobile radio receivers
In the case of a switching arrangement for mobile radio receivers having a device for adjusting the stereo playback portion relative to the mono playback portion as a function of multipath effects,...
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5701345 |
Multipath interference reduction system and method
A multipath interference reduction system and method for smoothly reducing noise associated with FM stereo signal reception with an adjustable blend. The system includes a peak detector for...
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5671286 |
Strategy for controlling FM stereo separation and frequency response in noisy reception environments
A control for an FM receiver reduces multipath distortion by reducing stereo separation and high frequency response in the demultiplexed signal. The receiver includes an FM detector including a...
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5661809 |
Radio receiver having digital signal processing
A radio receiver is provided having digital signal processing, a first and a second auxiliary signal derived from a received stereo multiplex signal, the first auxiliary signal being dependent upon...
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5661810 |
Circuit arrangement for deriving signals for masking audio signals
The circuit arrangement includes a first low-pass filter (2) for filtering an input signal (H3) proportional to the strength of a received radio signal; a second low-pass filter (3) for filtering...
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5579395 |
Stereo decoder with cross-talk compensation
A circuit arrangement for converting of a stereo signal having a mid-plane signal and a side signal into an output signal for each of two audio signal channels. By this circuit arrangement, a...
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5455866 |
Adaptive separation control for stereophonic radio receiver
A level detector is provided for detecting the level of a signal demodulated by a detector of a stereophonic radio receiver. A separation controller is provided for producing a separation control...
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5432854 |
Stereo FM receiver, noise control circuit therefor
A noise control system for a FM stereo receiver senses the presence of noise outside of the FM stereo transmission bandwidth at an output of a FM detector and uses variations of amplitude of the...
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5390344 |
FM audio signal receiver having a characteristic control function
An FM audio signal receiver having a characteristic control function includes a receiving circuit for receiving an FM broadcast wave, a received state analyzing circuit for analyzing a state of the...
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5297209 |
System for calibrating sound field
When a stereophonic broadcasting signal is interrupted because an electric field has weakened, a pilot signal 1 which designates that the electric field is not strong enough to separate an...
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5202925 |
FM stereophonic receiver
An FM stereophonic receiver including an FM detector circuit for detecting an intermediate frequency signal, and for providing a main signal and a sub signal in response to the detected...
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5201062 |
Noise reducing circuit
A noise reducing circuit for reducing various noise in the output of a receiver. A noise attenuating circuit receives a demodulated signal and attenuates the noise in the demodulated signal in...
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5185569 |
Peak value detecting circuit
A peak value detecting circuit has a peak voltage holding circuit, a voltage comparing section, a holding voltage control circuit, and a signal output circuit. The peak voltage holding circuit...
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5126981 |
Mixed simulcast circuit
A mixed simulcast circuit in which the voice signal demodulated in the voice demodulator through the tuner and the voice signal from the outside can be recorded on the recording medium according to...
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5113446 |
Stereo blend controller for FM receivers
The stereo separation provided by a radio receiver is controlled in dependence on the radio frequency environment at the receiver antenna. The blend curve for determining stereo separation in...
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5036543 |
Noise suppression apparatus for FM receiver
A noise component is extracted either from FM-detected output or from the so-called signal meter in the intermediate frequency amplifier. The noise component is amplified and rectified to provide a...
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5027402 |
Blend-on-noise stereo decoder
An FM stereo decoding and separating circuit has an (AM) demodulator multiplier to which is connected the FM stereo composite signal and a signal of dominant frequency equal to and in phase (0°) ...
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4972482 |
Fm stereo demodulator
Levels of a stereo sum signal and a stereo difference signal are detected by first and second level detectors (7, 9), respectively. Outputs of the first and second level detectors (7, 9) are...
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4959859 |
FM Channel separation adjustment
An attenuator in the composite L-R signal path used for dynamic signal control for blend purposes is limited in range by a static separation adjust signal which attenuates the maximum L-R signal to...
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4947431 |
Held music history circuit
A circuit is provided which gauges the amount of significant high-frequency spectral energy in the very recent history of the program material and ignores the effects of short noise bursts and...
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4901350 |
Closed-loop audio attenuator
A closed-loop attenuator for an FM stereo receiver provides attenuation to the L+R audio signal in a controlled and predictable reaction to an ultrasonic noise (USN) voltage presented to an input...
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