rcaudio 0.0.1

A realtime audio recording scripts

rcaudio : A Realtime Audio Recording & Analyze Script

Introduction

rcaudio Rcaudio is a real-time audio analysis library that allows you to simply record audio through a microphone and analyze.

It supports real-time analysis of :

• The raw audio data
• Volume
• Beat Information

For chinese documentation : 中文文档

Usage

CoreRecorder

CoreRecorder is used to fetch raw data. When started, the audio data will be stored in the CoreRecorder.buffer.

from rcaudio import CoreRecorder
CR = CoreRecorder(
        time = 10, #How much time to record
        sr = 1000 #sample rate
        )
CR.start()
while True:
    if not CR.buffer.empty():
        x = CR.buffer.get()
        print('*'*int(abs(x)))

SimpleRecorder

In most cases, we use SimpleRecorder. For efficiency consideration, the SimpleRecorder should only be instantiated once.

This class can register several Analyzer.

When the function start() called, It will begin to record through microphone, and refresh the status of all the Analyzer

Analyzers

All class extended from BaseAnalyzer can be registered into SimpleRecorder. For example VolumeAnalyzer can get the current volume of the microphone.

SR = SimpleRecorder()
VA = VolumeAnalyzer(rec_time = 1)
SR.register(VA)
SR.start()
while True:
    print("VOLUME : ",VA.get_volume())
    time.sleep(1)

And beat analyzer can predict the beats from the music. (However, there will be some delay.)

SR = SimpleRecorder(sr = 20000)
BA = BeatAnalyzer(rec_time = 15, initial_bpm = 120, smooth_ratio = .8)
SR.register(BA)
SR.start()
while True:
    print(BA.block_until_next_beat())