A sound signal processing method includes: obtaining a plurality of sound signals respectively collected by a plurality of microphones arranged in a space; adjusting respective levels of the plurality of sound signals in accordance with respective positions of the plurality of microphones; mixing the plurality of sound signals having the adjusted respective levels to thereby obtain a mixed signal; and generating a reflected sound by using the obtained mixed signal.

The present technology relates to a signal processing device, method, and program that can improve encoding efficiency.

A signal processing device includes: an acquisition unit that acquires reverb information including at least one of space reverb information specific to a space around an audio object or object reverb information specific to the audio object and an audio object signal of the audio object; and a reverb processing unit that generates a signal of a reverb component of the audio object on the basis of the reverb information and the audio object signal. The present technology can be applied to a signal processing device.

The present technology relates to a signal processing device, method, and program that can improve encoding efficiency.

A signal processing device includes: an acquisition unit that acquires reverb information including at least one of space reverb information specific to a space around an audio object or object reverb information specific to the audio object and an audio object signal of the audio object; and a reverb processing unit that generates a signal of a reverb component of the audio object on the basis of the reverb information and the audio object signal. The present technology can be applied to a signal processing device.

Systems and methods for providing accurate and independent control of reverberation properties are disclosed. In some embodiments, a system may include a reverberation processing system, a direct processing system, and a combiner. The reverberation processing system can include a reverb initial power (RIP) control system and a reverberator. The RIP control system can include a reverb initial gain (RIG) and a RIP corrector. The RIG can be configured to apply a RIG value to the input signal, and the RIP corrector can be configured to apply a RIP correction factor to the signal from the RIG. The reverberator can be configured to apply reverberation effects to the signal from the RIP control system. In some embodiments, one or more values and/or correction factors can be calculated and applied such that the signal output from a component in the reverberation processing system is normalized to a predetermined value (e.g., unity (1.0)).

An apparatus for positioning at least part of a sound field based on a target direction, the apparatus comprising means configured to: obtain at least one audio signal; obtain speaker setup information; obtain, for at least two processing paths, at least one processing path parameter, the at least one processing path parameter comprising a target direction associated with each of the at least two processing paths; process, for each of the at least two processing paths, the at least one audio signal based on the at least one processing path parameter to generate a multiple-channel audio signal, wherein for each processing path the means is configured to: generate at least two at least partly mutually incoherent audio signals from the at least one audio signal; determine at least two panning gains based on the target direction associated with the processing path and the speaker setup information; apply each of the at least two panning gains with an associated one of the at least partly mutually incoherent audio signal to generate at least two panning gain applied at least partly mutually incoherent audio signals; and combine the at least two panning gain applied at least partly mutually incoherent audio signals to generate the multiple-channel audio signal; and combine the multiple-channel audio signal from each processing path to generate a combined panning gain applied multiple-channel audio signal.

An apparatus for positioning at least part of a sound field based on a target direction, the apparatus comprising means configured to: obtain at least one audio signal; obtain speaker setup information; obtain, for at least two processing paths, at least one processing path parameter, the at least one processing path parameter comprising a target direction associated with each of the at least two processing paths; process, for each of the at least two processing paths, the at least one audio signal based on the at least one processing path parameter to generate a multiple-channel audio signal, wherein for each processing path the means is configured to: generate at least two at least partly mutually incoherent audio signals from the at least one audio signal; determine at least two panning gains based on the target direction associated with the processing path and the speaker setup information; apply each of the at least two panning gains with an associated one of the at least partly mutually incoherent audio signal to generate at least two panning gain applied at least partly mutually incoherent audio signals; and combine the at least two panning gain applied at least partly mutually incoherent audio signals to generate the multiple-channel audio signal; and combine the multiple-channel audio signal from each processing path to generate a combined panning gain applied multiple-channel audio signal.

In some embodiments, virtualization methods for generating a binaural signal in response to channels of a multi-channel audio signal, which apply a binaural room impulse response (BRIR) to each channel including by using at least one feedback delay network (FDN) to apply a common late reverberation to a downmix of the channels. In some embodiments, input signal channels are processed in a first processing path to apply to each channel a direct response and early reflection portion of a single-channel BRIR for the channel, and the downmix of the channels is processed in a second processing path including at least one FDN which applies the common late reverberation. Typically, the common late reverberation emulates collective macro attributes of late reverberation portions of at least some of the single-channel BRIRs. Other aspects are headphone virtualizers configured to perform any embodiment of the method.

A signal processing apparatus includes: an obtaining portion configured to obtain an impulse response in a semi-open state in which, among a plurality of acoustic feedback systems, at least one acoustic feedback system is open and at least one acoustic feedback system is closed; and a calculating portion configured to calculate a gain correction amount based on the impulse response that the obtaining portion has obtained and to output a calculated gain correction amount.

A signal processing apparatus includes: an obtaining portion configured to obtain an impulse response in a semi-open state in which, among a plurality of acoustic feedback systems, at least one acoustic feedback system is open and at least one acoustic feedback system is closed; and a calculating portion configured to calculate a gain correction amount based on the impulse response that the obtaining portion has obtained and to output a calculated gain correction amount.

A sound effect producing apparatus includes an input portion, a memory portion, a pseudo sound reflection producing portion, and an effect provision portion. The input portion performs inputting of an audio signal. The memory portion stores sound effect information that includes production information for producing a pseudo sound reflection corresponding to a sound reflection generated in a predetermined acoustic space and sound source position information showing a sound source position of the pseudo sound reflection. The pseudo sound reflection producing portion produces a pseudo sound reflection based on the production information. The effect provision portion performs a process of localizing the pseudo sound reflection using a predetermined direction as a reference, based on the audio signal and the sound source position information.