Sony Corporation

Sony Group Corporation

Other

Makoto Akune

Kenzo Akagiri

Masayuki Nishiguchi

Yoshihito Fujiwara

Naoto Iwahashi

Ryuichi Namba

Yoshiaki Oikawa

Tadao Suzuki

Yasuhiro Ogura

Kohei Asada

Toru Chinen

Gen Ichimura

Minoru Tsuji

Ayataka Nishio

Kenichi Imai

Masayoshi Noguchi

Koyuru Okimoto

Hiroshi Suzuki

Keiichi Aoyama

Kazunobu Ookuri

Masashi Fujihara

Tomoko Umezawa

Provided is a signal processing apparatus which includes an interval detection unit to detect a time interval containing a sound that is emitted from a mobile body and that is included in a recording signal obtained by collecting sounds around the mobile body in a state where another mobile body is present around the mobile body, the time interval being detected on the basis of the recording signal and a sensor signal output from a sensor attached to the mobile body.

Signal processing apparatus, method, and program to detect a time interval containing sound based on a distance between two mobile bodies

The present technology relates to a signal processing device, a method, and a program that make it possible for a user to obtain a higher realistic feeling. The signal processing device includes: an audio generation unit that generates a sound source signal according to a type of a sound source on the basis of a recorded signal obtained by sound collection by a microphone attached to a moving object; a correction information generation unit that generates position correction information indicating a distance between the microphone and the sound source; and a position information generation unit that generates sound source position information indicating a position of the sound source in a target space on the basis of microphone position information indicating a position of the microphone in the target space and the position correction information. The present technology can be applied to a recording/transmission/reproduction system.

Signal processing device and method

The present technology relates to a signal processing device, signal processing method, and program capable of providing a higher realistic feeling. A signal processing device includes: an acquisition unit that acquires audio data of an audio object and metadata including position information indicating a position of the audio object and direction information indicating a direction of the audio object; and a signal generation unit that generates a reproduction signal for reproducing a sound of the audio object at a listening position on the basis of listening position information indicating the listening position, listener direction information indicating a direction of a listener at the listening position, the position information, the direction information, and the audio data. The present technology is applicable to a transmission reproduction system.

Signal processing device, signal processing method, and program

The present technology relates to an information processing apparatus configured to obtain high comfortability. The information processing apparatus includes a plurality of board portions, an acquisition unit placed on one of the board portions and configured to acquire information associated with a wearer, and a connection portion being flexible and configured to connect the board portion to another of the board portions. The present technology is applicable to wearable devices.

Information processing apparatus

The present technology relates to a signal processing apparatus and method that are capable of reproducing sound at an optional listening position with a high sense of reality. The signal processing apparatus includes a rendering unit that generates reproduction data of sound at an optional listening position in a target space on the basis of recording signals of microphones attached to a plurality of moving bodies in the target space. The present technology can be applied to a reproduction apparatus.

Signal processing apparatus and method

A normalizer normalizes the power of a dither signal calculated by a power calculator based on the average power of a PCM signal in the range of 18 kHz to 20 kHz, wherein the average power is calculated by the power calculator. An oversampling processor oversamples the PCM signal with a quantization frequency of 44.1 kHz and a quantization word length of 16 bits, wherein the PCM signal is inputted from an input terminal at a sampling frequency of 2&#xd7;44.1 kHz, and then supplies an output of the oversampling process to an adder. The adder adds the normalized output from the normalizer to the oversampling output from the oversampling processor, and then supplies the addition output to an oversampling processor.

Digital signal processing apparatus and method

A signal processing method is provided which detects a signal dropout portion in the input signal and which modifies the detected signal dropout portion with a signal derived from the portion in the input signal other than the signal dropout portion by predictive synthesis based upon the signal portion other than the dropout portion.

Signal processing method and apparatus and signal recording medium

A sampling rate converting method and apparatus for converting the sampling frequency of a 1-bit digital data obtained a .SIGMA..DELTA. modulator to 32 kHz, 48 kHz, 96 kHz or 192 kHz without producing jitter. A decimation filter 3 decimates the sampling frequency of 1-bit digital data of 2.8224 MHz supplied from an input terminal 2 by 1/2-tuple decimation. An interpolation filter 4 oversamples the frequency of the output of the decimation filter 3 by quintuple oversampling with an integer ratio of 1:5. A decimation filter 5 decimates the frequency of the output of the interpolation filter 4 by 1/21-tuple decimation with an integer ratio of 21:1.

Sampling rate converting method and apparatus

A signal processing apparatus is arranged to convert a multi-bit audio signal having the conventional sampling frequency fs KHz and m quantizing bits (m is an integer) into a one-bit audio signal having the sampling frequency 64.times.fs KHz and one quantizing bit. Hence, the apparatus can offer an audio signal in a highly dynamic range. Further, the signal processing apparatus is arranged to separate sub-data added to the multi-bit audio signal in transmission from the multi-bit audio signal, sigma-delta modulate the multi-bit audio signal through the effect of a sigma-delta modulator. This suppresses the adverse effect on the audio signal. The apparatus is also arranged to control the supply of a timing signal and a clock signal to the sigma-delta modulator and a D/A converter based on the sub-data. This makes it possible to positively control a switching timing.

Signal processing apparatus for converting multi-bit signal having

An apparatus and method for processing an input digital signal in which an input digital audio signal at an input terminal 11 is supplied via a one-block delay unit 17 to a difference unit 20, an output of which is processed by a noise-shaping circuit 21 and restored by a near-instantaneous compressor 26, a near-instantaneous expander 27 and an accumulator 28 so as to be fed back to the difference unit 20 to find a difference between a signal of a directly preceding sample and a signal of the current sample. The noise shaping circuit 21 modifies the spectrum of the quantization noise by taking aural characteristics, such as equal-loudness characteristics or masking characteristics, into account for diminishing the level of the quantization noise as perceived by the ear. The noise level as perceived may be reduced in a manner desirable for the sound quality without changing the existing format.

High efficiency encoding device and a noise spectrum modifying device

Methods and apparatus for replacing missing signal information with

Method and apparatus for altering frequency components of a transformed

An audio signal recording device having an input terminal, a modulator for modulating an input signal, a detecting circuit for detecting whether an input signal maintains a fixed value for a predetermined period of time, a signal generator for generating an idling signal, a delay circuit for delaying a modulated input signal and a switch for alternately inputting either the idling signal or modulated input signal to a recording circuit.

Digital audio transmission apparatus

A sampling rate converting method and apparatus for converting the sampling frequency of a 1-bit digital data obtained by a .SIGMA..DELTA. modulator to 32 kHz, 48 kHz, 96 kHz or 192 kHz without producing jitter. A decimation filter 3 decimates the sampling frequency of 1-bit digital data of 2.8224 MHz supplied from an input terminal 2 by 1/21-tuple decimation. An interpolation filter 4 oversamples the frequency of the output of the decimation filter 3 by quintuple oversampling with an integer ratio of 1:5. A decimation filter 5 decimates the frequency of the output of the interpolation filter 4 by 1/21-tuple decimation with an integer ratio of 21:1.

An audio signal recording and reproduction apparatus enabling a low frequency band signal component to be reproduced by existing reproduction apparatuses and a high frequency band component to be processed as well. A digital audio signal is divided into a low frequency band signal component and high frequency band signal component by a frequency band division filter. The low band signal component is subjected to straight PCM processing to maintain compatibility with existing reproduction methods. The high frequency band signal component is subjected to high frequency coding through a requantization circuit and entropy coding circuit. A comparison circuit compares the straight PCM signals and the high efficiency coded signals to determine if they will fit into a predetermined bit length and, when not fitting, causes the requantization circuit to perform requantization to shorten the bit length. The bit redistribution circuit performs redistribution between the straight PCM bit data and the high efficiency coded bit data. The wave data is recorded on a CD. On the CD may also be recorded the sub-code data of an entropy coding circuit and the number of requantization bits of a requantization circuit.

Growing community of inventors

Tokyo, Japan

Makoto Akune