audio-analysis-service

Audio convert/analysis service.

Features

- Read audio stream from url, convert to flac format, transcript to text with google cloud api
- Analysis text with google cloud NLP api

Prerequisites

- nodejs >= 8.10
- register google cloud account and set payment method, download your credential json.

dev

``bash
git clone git@github.com:zxdong262/audio-analysis-service.git
#or git clone https://github.com/zxdong262/audio-analysis-service.git
cd audio-analysis-service

install dependencies

yarn

create config

cp .sample.env .env

then edit .env, fill your google credential path

start local server

yarn dev

`


Build and Run in production env


`bash

install pm2 first if you wanna use pm2

yarn global add pm2

or npm i -g pm2

build

yarn build

run production server

yarn prod-server

or use pm2

pm2 start bin/pm2.yml
`

Use as service

- /text-analysis?text=text for text analysis, including Sentiment, Syntax, Classification, Entity sentiment.
- /audio-url-to-text transcript audio url to text with google cloud ai.
- /audio-url-analysis for audio url analysis, will transform to flac first, then transcript to text, then use google cloud ai to anlaysis.


`js

it('text-analysis', function(done) {
let text = encodeURIComponent('Hi! My name is Joanna. I will read any text you type here')
fetch(${base}/text-analysis?text=${text}, {
headers: {
'Content-Type': 'application/json'
}
})
.then(res => res.json())
.then(res => {
expect(!!res.text).equal(true)
done()
})
})

it('audio-url-analysis', function(done) {
fetch(${base}/audio-url-analysis, {
method: 'post',
body: JSON.stringify({
url: ${base}/sample.mp3,
//set headers for auth when needed
//headers: {}
}),
headers: {
'Content-Type': 'application/json'
}
})
.then(res => res.json())
.then(res => {
console.log(res)
expect(!!res.text).equal(true)
done()
})
})

it('audio-url-to-text', function(done) {
fetch(${base}/audio-url-to-text, {
method: 'post',
body: JSON.stringify({
url: ${base}/sample.mp3,
//set headers for auth when needed
//headers: {AuthCode....}
}),
headers: {
'Content-Type': 'application/json'
}
})
.then(res => res.text())
.then(res => {
expect(res).includes('name is')
done()
})
})
`




Use as lib

`bash
npm i audio-analysis-service
`

`js
import {textAnalysis} from 'audio-analysis-service/dist/text-analysis'
import {speech2text} from 'audio-analysis-service/dist/url2text'
import {toFlac} from 'audio-analysis-service/dist/voice-to-flac'
import urlAnalysis from 'audio-analysis-service/dist/url-analysis'
`

Test


`bash
yarn test
``

License

MIT