WO2008044752A1

WO2008044752A1 - Audio apparatus with reduction of perception for self-uttering voice

Info

Publication number: WO2008044752A1
Application number: PCT/JP2007/069904
Authority: WO
Inventors: Atsushi Nakanishi
Original assignee: Atsushi Nakanishi
Priority date: 2006-10-06
Filing date: 2007-10-04
Publication date: 2008-04-17
Also published as: JP2008099220A

Abstract

Since listening to one's own uttering voice over an audio apparatus is different from direct perception of one's own uttering voice, it is a problem that a sound tone through the audio apparatus cannot be easily adjusted by one's own uttering voice. Further, since one's own modulated or converted voice and one's own uttering voice to be directly perceived are simultaneously perceived in a voice changer, etc., a sufficiently simulated experience result such as utterance of other person's voice cannot be obtained. It is an object to provide an audio apparatus to solve the problem. The audio apparatus detects one's own voice to be directly perceived, generates and sends a sound wave that is reverse in phase to reduce one's own voice to be directly perceived, and generates one's own modulated or converted voice to make the one listen.

Description

Audio equipment with perceived voice reduction

Technical field

The present invention relates to an audio device, and is directly perceived without using an audio device.

By reducing the sound emitted by the user and making the sound of his / her own sound through the modulated / converted sound device, the sound of the sound through the sound device can be easily tuned with the sound of his own, In addition, by making it possible to hear the modulated / converted sound like the voice of another person, it gives a simulated experience as if the voice of another person is being emitted.

Background art

Examples of those using the technology for reducing sound by using antiphase sound waves related to the present invention are those for reducing external noise disclosed in Patent Document 1, and those disclosed in Patent Document 2. There is something that reduces the voice of your own voice so that others do not hear it. In addition, there is a voice changer that converts voices that have been uttered by itself to generate voices of other people. An example of this is disclosed in Patent Document 3.

Patent Document 1: Japanese Patent Laid-Open No. 2-5 2 3 98

Patent Document 2: Japanese Patent Application Laid-Open No. 10-2 0 8 6 7

Patent Document 3: Japanese Patent Application Laid-Open No. 10-2 6 8 8 75

Disclosure of the invention

Problems to be solved by the invention

The difference between the sound propagation path and the modulation or conversion of sound by the sound device, when listening to the sound produced by the user through the sound device or directly perceiving it without going through the sound device Sounds different. When using audio equipment such as singing for presentations, the voice directly perceived without going through the audio equipment gets in the way, and the tone of the sound through the audio equipment cannot be easily adjusted with its own voice. There was a title.

In addition, the voice changer that modulates and converts the sound used in karaoke, etc., and generates the sound of other people, such as its own voice that is directly perceived without using an audio device, the voice changer, etc. The sound that was modulated and converted by the sound was perceived at the same time, and the simulated experience of producing the sound of another person was not obtained.

An object of the present invention is to solve the above-described problems.

Means for solving the problem

In order to solve this problem, the present invention detects its own voice that is directly perceived without using an acoustic device, generates and transmits a sound wave having a phase opposite to that of the sound, and is directly perceived without using the acoustic device. In addition to canceling and reducing one's own voice, it also generates and modulates its own voice so that it can be heard.

As a result, the ratio of modulated / converted audio through the audio equipment increases, and the audio through the audio equipment can be heard clearly. When it becomes easier to adjust the tone of the audio through the audio equipment with your own voice, The effect is demonstrated.

In addition, the user's own voice that is directly perceived without going through an audio device and the person's own voice that has been modulated and converted like another person's voice are not perceived at the same time. You can have a simulated experience.

The invention's effect

According to the present invention, since the sound directly perceived without using the audio equipment is reduced by the present invention, the sound directly perceived without using the audio equipment becomes an obstacle when using the audio equipment, and the sound passes through the audio equipment. The problem that the tone of the voice cannot be easily adjusted with its own voice is solved.

In addition, one's own voice that is directly perceived without going through an acoustic device and the voice of another person Thus, the problem that the effect of the pseudo-experience could not be obtained due to the fact that the modulated and converted speech is not perceived at the same time and these are perceived at the same time is solved. Brief Description of Drawings

FIG. 1 is a block diagram of a preferred system according to the present invention.

Explanation of symbols

1 Microphone for detecting sound directly propagating through the human body

2 Microphone for detecting sound propagating in the air

3 Speaker for transmitting sound waves that propagate directly through the human body

4 Speaker for transmitting sound waves propagating in the air BEST MODE FOR CARRYING OUT THE INVENTION

In order to describe the present invention in more detail, it will be described with reference to FIG. This is a digital processing system using DSP, but it can be replaced with an analog processing system.

Microphone 1 (1) is used to detect sound that propagates directly through the human body, and is attached to the neck and chin near the vocal tract. Microphone 2 (2) detects sound that propagates in the air. Is for.

The sound detected by each microphone is converted into a digital signal by an A / D conversion unit for digital processing. This signal is a line that creates sound waves with anti-phase to reduce their own voice that is directly perceived without going through acoustic equipment, and modulation to change the tone of the voice or convert it to voice like another person Divided into two conversion lines.

The line that makes the sound wave of the opposite phase is composed of the phase inversion unit that inverts the phase to create the opposite phase, the timing unit for adjusting the signal transmission timing, and the amplitude adjustment unit for changing the signal size. The By changing the timing and amplitude of sending out-phase sound waves, it can be directly perceived without using audio equipment. Adjusted so that its own voice is reduced most.

Audio modulation to change the tone of the voice or convert it to voice like other people · The conversion line is a voice modulation consisting of a filter with transfer characteristics that change the tone of the voice and a subunit that converts the frequency · It consists of a conversion unit, a timing unit for adjusting the signal transmission timing, and an amplitude adjustment unit for changing the signal size. In addition, the signal after the audio modulation / conversion unit is branched so that the signal can be output to external audio equipment, and one of the signals is provided to the outside as an analog signal via the D / A conversion unit.

Reverse the phase of the line exit that creates the sound wave of the opposite phase, and adjust the modulated signal and the voice modulation and modulation of the voice of the conversion line exit 'Conversion, the adjusted signal is added and D / A conversion It is converted to an analog signal by the unit. This signal is amplified and sent from the speaker.

The speaker 1 of 3 sends out sound waves that propagate directly through the human body, and is intended to cancel and reduce the perceived sound that propagates directly inside the human body without passing through the acoustic equipment. The speaker 2 in 4 sends out sound waves that propagate in the air, and is used to cancel and reduce the perceived sound that propagates directly in the air without going through the acoustic equipment.

The configuration of FIG. 1 consisting of both a unit group consisting of one microphone 1 and a unit group consisting of two microphones 2 is the most effective, but only one unit group. May be.

The effects of the invention can be obtained by configuring the system described above. Industrial applicability

Since the acoustic device according to the present invention can be industrially mass-produced, it has industrial applicability.

Claims

Scope of request Detects directly perceived sound, generates sound waves that are in reverse phase to this, transmits and reduces directly perceived sound, and generates modulated and converted own sound Audio equipment characterized by letting you listen.