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LPC(線形予測分析)法によるホルマント周波数とピッチ周波数を推定する簡略的なプログラム。

Python 100.00%
formant-detection voice-analysis speech-analysis

formant's Introduction

音声のホルマントの3D表示

概要

LPC(線形予測分析)法によるホルマント周波数とピッチ周波数を推定する簡略的なプログラム。
LPCスペクトルと推定されたホルマントの位置を3D表示する。

github repository

使い方

wavファイル(16khz,mono,16bit)名前を引数にして実行する。

python main1.py wav/aiueo1.wav

aiueo1.wav「あいうえお」の推定で結果である。
下図のようにスペクトルと、ホルマントの候補位置が赤丸で表示される。
sample
sample

また、下図のように、ホルマント周波数の5番目までの[候補]とピッチ周波数の推定値が表示される。 注意:これらの値は正しいとは限らない。外れていることもある。
sample

参照したもの

免責事項

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

上記はMITライセンスからの抜粋です。

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