JP-2026076346-A - Signal processing system, signal processing method, and program

JP2026076346AJP 2026076346 AJP2026076346 AJP 2026076346AJP-2026076346-A

Abstract

[Problem] To provide a mechanism that makes binaural recording easier to implement. [Solution] A signal processing system comprising: a measuring device for acquiring measurement data relating to transmission characteristics; a first acquisition device for acquiring a first acoustic signal; and a control device connected to each of the measuring device and the first acquisition device via a network, wherein the control device corrects the first acoustic signal based on the measurement data acquired by the measuring device and generates a second acoustic signal. [Selection Diagram] Figure 1

Inventors

今誉
前野悠

Assignees

クレプシードラ株式会社

Dates

Publication Date: 20260511
Application Date: 20260218
Priority Date: 20220526

Claims (14)

A measuring device that acquires measurement data related to transfer characteristics, A first acquisition device for acquiring a first acoustic signal, A control device connected via a network to each of the aforementioned measuring device and the first acquisition device, Equipped with, The control device corrects the first acoustic signal based on the measurement data acquired by the measuring device and generates a second acoustic signal. Signal processing system.
The aforementioned signal processing system is A playback device that reproduces an audio signal, A second acquisition device for acquiring acoustic signals, Furthermore, The measuring device transmits the fourth acoustic signal, which corresponds to the third acoustic signal acquired by the second acquisition device and reproduced by the playback device, to the control device as measurement data. The signal processing system according to claim 1.
The measuring device transmits information indicating the characteristics of the regeneration device or information indicating the characteristics of the second acquisition device as measurement data to the control device. The signal processing system according to claim 2.
The measuring device transmits information indicating the method by which the second acquisition device acquired the fourth acoustic signal to the control device as measurement data. The signal processing system according to claim 2.
The signal processing system comprises two of the regeneration devices and two of the second acquisition devices, The two playback devices, the two second acquisition devices, and the measuring device are wired together via a five-pole plug consisting of two terminals for transmitting the third acoustic signal input to the two playback devices, two terminals for transmitting the fourth acoustic signal output from the two second acquisition devices, and one ground terminal. The signal processing system according to claim 2.
The measuring device transmits the fifth acoustic signal acquired by the second acquisition device as measurement data to the control device at a time when the playback device is not performing playback of the acoustic signal. The control device further corrects the first acoustic signal based on the fifth acoustic signal. The signal processing system according to claim 2.
The measuring device includes a cellular communication interface and transmits the measurement data to the control device via the communication interface. The signal processing system according to claim 1.
The measuring device determines whether the acquired measurement data satisfies predetermined conditions, and transmits only the measurement data that is determined to satisfy the predetermined conditions to the control device. The signal processing system according to claim 1.
The signal processing system further comprises a terminal device capable of receiving information input from a user and outputting information to the user. The terminal device inputs and outputs information related to the acquisition of the measurement data. The measuring device acquires the measurement data as a trigger when information instructing the terminal device to acquire the measurement data is input to the terminal device. The signal processing system according to any one of claims 1 to 8.
The terminal device outputs information indicating the actions the user should perform before acquiring the measurement data. The signal processing system according to claim 9.
The terminal device refuses to input information instructing it to start acquiring the measurement data if the user has not yet performed the action that should be performed before acquiring the measurement data. The signal processing system according to claim 9.
The control device calculates the transfer characteristics based on the measurement data, and generates the second acoustic signal by convolving the inverse characteristics of the calculated transfer characteristics into the first acoustic signal. The signal processing system according to claim 1.
Acquiring measurement data regarding transfer characteristics via a network, The first acoustic signal acquired by the first acquisition device is acquired via the network, Based on the measurement data, the first acoustic signal is corrected to generate a second acoustic signal. A signal processing method performed by a computer, including [the specified method].
On the computer, Acquiring measurement data regarding transfer characteristics via a network, The first acoustic signal acquired by the first acquisition device is acquired via the network, Based on the measurement data, the first acoustic signal is corrected to generate a second acoustic signal. A program to execute.

Description

This disclosure relates to a signal processing system, a signal processing method, and a program. In recent years, binaural recording has been gaining attention. Binaural recording is a technique that records sound as it is transmitted to the eardrums of both ears. For example, microphones placed inside the ear canals of both ears are used in binaural recording. Playing back binaurally recorded sound is also called binaural playback. By using earphones or headphones for binaural playback, it is possible to reproduce a sense of three-dimensionality and realism, as if one were actually present at the recording location. Various technologies related to binaural recording and binaural playback have been developed. For example, Patent Document 1 below proposes a binaural recording device that uses a noise-canceling microphone located on the outside of an earphone, which is held in the ear by inserting the earpiece into the ear canal. Japanese Patent Publication No. 2009-49947 This figure shows an example of the configuration of a signal processing system according to one embodiment of the present disclosure.This figure shows an example of the configuration of the measurement system according to this embodiment.This figure shows an example of the configuration of the recording system according to this embodiment.This figure shows an example of the configuration of the control device according to this embodiment.This figure illustrates the measurement of transfer characteristics according to this embodiment.This is a diagram illustrating the binaural recording according to this embodiment.This is a diagram illustrating the binaural playback according to this embodiment.This sequence diagram shows an example of the processing flow performed in the signal processing system according to this embodiment.This diagram schematically shows an example of the hardware configuration of a measurement earphone and measurement microphone.This diagram illustrates an example of a connection configuration between a measuring earphone and microphone and a measuring device.This is a sequence diagram showing an example of the processing flow performed in the signal processing system according to the first modified example.This is a sequence diagram showing an example of the processing flow performed in the signal processing system according to the second modified example. Preferred embodiments of this disclosure will be described in detail below with reference to the attached drawings. In this specification and the drawings, components having substantially the same functional configuration are denoted by the same reference numerals, thus omitting redundant descriptions. <1. Example Configuration> (1) Configuration of Signal Processing System 1 Figure 1 is a diagram showing an example of the configuration of a signal processing system 1 according to one embodiment of the present disclosure. As shown in Figure 1, the signal processing system 1 includes a measurement system 2, a first terminal device 3, a recording system 4, a second terminal device 5, and a control device 6. The measurement system 2, the first terminal device 3, the recording system 4, the second terminal device 5, and the control device 6 are connected via a network 9 and can communicate with each other. The network 9 may include a local network as well as a public network. For example, the network 9 may be composed of telephone lines or the internet. Measurement System 2 is a system for acquiring measurement data, which will be described later. Measurement System 2 will be explained in detail later. The first terminal device 3 is a device that processes data acquired by the measurement system 2. The first terminal device 3 can accept information input from the user and output information to the user. For example, the first terminal device 3 displays a UI (User Interface) screen for operating the measurement system 2, notifying the user of information and accepting user operations. As an example, the first terminal device 3 can be implemented using a smartphone or similar device. Recording System 4 is a system for binaural recording. Recording System 4 will be explained in detail later. The second terminal device 5 is a device that acquires binaurally recorded content (i.e., acoustic signals) and performs various processing. The second terminal device 5 can output information to the user and accept information input from the user. For example, the second terminal device 5 acquires binaurally recorded content that has been corrected by the control device 6, and plays it back binaurally through playback earphones connected to the second terminal device 5. As an example, the second terminal device 5 can be implemented using a PC (Personal Computer). The control device 6 is a device that performs correction processing to improve the quality of content recorded binaurally by the recording system 4. Specifically, the control device 6 corrects the content recorded binaurally