Signal processing device, signal processing method, and program for selectable spatial correction of multichannel audio signal

A signal processing method comprising:

• receive a multiplexed signal, including a multichannel audio signal, from a transmitter based on the transmitter performing sound collection through a microphone array in a sound collection space;
• selecting one spatial correction scheme from among a plurality of spatial correction schemes for correcting a spatial transfer characteristic on the basis of spatial correction information;
• and
• performing a spatial correction process on the multichannel audio signal on the basis of a spatial transfer characteristic matrix of the selected spatial correction scheme to provide a spatially corrected audio signal and outputting the spatially corrected audio signal to a speaker array in a reproduction space different from the sound collection space, wherein the spatial correction information is information indicating a priority of the spatial correction process.

A non-transitory computer-readable medium storing instructions that,

• when executed by a processing device, perform a process comprising:
• receiving a multiplexed signal, including a multichannel audio signal, from a transmitter based on the transmitter performing sound collection through a microphone array in a sound collection space;
• selecting one spatial correction scheme from among a plurality of spatial correction schemes for correcting a spatial transfer characteristic on the basis of spatial correction information;
• and
• performing a spatial correction process on the multichannel audio signal on the basis of a spatial transfer characteristic matrix of the selected spatial correction scheme to provide a spatially corrected audio signal and outputting the spatially corrected audio signal to a speaker array in a reproduction space different from the sound collection space, wherein the spatial correction information is information indicating a priority of the spatial correction process.

A signal processing device comprising:

• a computer including a processing device and a memory device storing instructions that, when executed by the processing device, cause the processing device to:
• acquire spatial correction information for selecting a scheme of a spatial correction process of correcting a spatial transfer characteristic, the spatial correction process being performed on a multichannel audio signal obtained by, performing sound collection through a microphone array in a sound collection space;
• and
• including the multichannel audio signal wherein the receiver performs a spatial correction process on the multichannel audio signal on the basis of a spatial transfer characteristic matrix of the selected spatial correction scheme and outputs the spatially corrected audio signal to a speaker array in a reproduction space different from the sound collection space wherein the spatial correction information is information indicating a priority of the spatial correction process.