JPH01129936U

JPH01129936U -

Info

Publication number: JPH01129936U
Application number: JP1988024607U
Authority: JP
Priority date: 1988-02-25
Filing date: 1988-02-25
Publication date: 1989-09-05

Description

[Brief explanation of drawings]

第１図は本考案の一実施例のブロツクダイヤグ
ラムを、第２図と第３図は音声信号の周波数を２
倍に逓増したり、或いは１／２に逓減する原理を
示す説明図である。１１……マイクロフオン、１２……第１の増幅
器、２０……プロセツサ、２１……サンプリング
回路、２２……Ａ／Ｄコンバータ、２３……音声
信号処理回路、２４……Ｄ／Ａコンバータ、３０
……音声信号メモリ、４０……マイコン、４５…
…音声切換スイツチ、４６……音声変換スイツチ
、４９……音程調整スイツチ、５１……第２の増
幅器、５２……スピーカー、６０……送話器。 Figure 1 shows a block diagram of one embodiment of the present invention, and Figures 2 and 3 show the frequency of the audio signal.
FIG. 3 is an explanatory diagram showing the principle of increasing by a factor of two or decreasing by a factor of two. 11...Microphone, 12...First amplifier, 20...Processor, 21...Sampling circuit, 22...A/D converter, 23...Audio signal processing circuit, 24...D/A converter, 30
...Audio signal memory, 40...Microcomputer, 45...
...Audio selection switch, 46...Audio conversion switch, 49...Pitch adjustment switch, 51...Second amplifier, 52...Speaker, 60...Transmitter.

Claims

[Scope of utility model registration request]

A microphone, a first amplifier connected to this microphone, a processor connected to this amplifier, and a second amplifier connected to this processor.
An audio conversion device for a telephone, comprising an amplifier, an audio signal memory, and a microcomputer, and a speaker connected to the second amplifier, wherein the processor includes an audio signal sampling circuit, an A/D converter, an audio signal processing circuit, and a second amplifier. A D/A converter is provided, and the audio signal processing circuit samples each of the divided audio signals of the inner wavelength of the divided audio signals obtained by sampling the audio signal by the sampling circuit twice and synthesizes the divided audio signals. thereby creating a first converted audio signal having a frequency that is 1/2 of the frequency of the audio signal, and a specific one of the divided audio signals of different wavelengths is used twice or more, and the other ones are processed twice, or By sampling a specific one of the divided audio signals of different wavelengths once and the others twice and synthesizing them, the first converted audio signal is generated with a frequency of 1/2 of the audio signal as a reference. The pitch can be adjusted below or above that, and the audio signal processing circuit samples and synthesizes every other divided audio signal obtained by sampling one wavelength of the audio signal by the sampling circuit. A second converted audio signal having a frequency twice the frequency of the audio signal is created by performing the step of creating a second converted audio signal of two wavelengths at all wavelengths of the audio signal, and Sampling the divided audio signals every other one and suitably sampling two or more of them and synthesizing them; or By collecting and synthesizing the divided audio signals, the second converted audio signal can be adjusted in pitch above or below the frequency twice that of the audio signal, A voice conversion device for a telephone set, characterized in that a voice output from a speaker based on the converted voice signal amplified by an amplifier is input to a transmitter of the telephone set.