LvAut 2021.1.1

Audio wav file test module

Copyright (c) 2021 lorry_rui

//////////usage://///////////////

for test sweep tone WAV file only

audio file analyze USE only @ Lorry RUi
Mail to: [e-mail] [e-mail]

https://pypi.org/project/LvAut

https://github.com/Lorrytoolcenter/LvAut

|tests| |coverage| |docs| |python-versions| |license|  

The Python package audio_wav handles all kind of audio files

sample code:

.. code:: python

   import LvAut.lvaut_THD as AUT 
   filename='yourfile.wav' 
   signal, sample_rate, channels=AUT.load(filename) 

change master speaker volume

.. code:: python

	import LvAut.lvaut_THD as AUT  
	AUT.setspeakervolume(40)  ## set master speaker volume from 0 to 100

play master speaker

.. code:: python

	import LvAut.lvaut_THD as AUT
	AUT.playsoundWin('yourfile.wav')

list all speaker and mics devices

.. code:: python

	import LvAut1.device as sd
	print(sd.query_devices())

recording master speaker

.. code:: python

	import LvAut.device as sd
	import LvAut.lvaut_THD as AUT
	fs = 44100  # Sample rate
	seconds = 5  # Duration of recording
	myrecording = sd.rec(int(seconds * fs), samplerate=fs, channels=1)  # using default mic
	#myrecording = sd.rec(int(seconds * fs), samplerate=fs, channels=1, device="Microphone (Logitech Webcam C930e), Windows DirectSound")
	sd.wait()  # Wait until recording is finished
	AUT.write("test.wav",myrecording,fs)

analyze_sweep tone

.. code-block:: python

	import LvAut.lvaut_THD as AUT  
	filename='Device_Mic_THD_R_3.wav'  
	trigeFrequncy=400  ## this need sweep from high(above 400) to low sweep tone  
	stopananlysis=100   ## stop analyze_sweep  
	channaelselect=1 ### if recording is dual channel ,leftchannel=1, rightchannel=2, otherwise no need to define  
	freq,thdh,thd_N,power,Freq_THD,thd_data,Freq_Power,PowerS,RubBuzz_data=AUT.analyze_sweep(filename, trigeFrequncy,stopananlysis,channaelselect) 
	print('FFT Frequency:   %.1f Hz' % freq)  
	print("Sweep Max THD:   %.4f%% " %thdh)  
	print("Sweep Max THD+N: %.4f%%      Note, this is single tone use only " %thd_N)  
	print("spectrum Max Power:       %.2fdB " %power)     

output explain

1)freq  means: single tone , measured frequency  
1.1)thd_N   means: single Max THD+N  	
2)thdh   means: Sweep Max THD  
3)Freq_THD, measure THD's frequency
4)thd_data, measure THD's data
5)Freq_Power,measure Power's frequency
6)PowerS,  measure Power's data
7)RubBuzz_data    measure RB's data