Step by Step solution about How to resolve the algorithm Record sound step by step in the Python programming language

This Python script demonstrates a simple audio recording and printing of the raw samples using the PyAudio library. Here's a detailed explanation of the code:

1. Importing PyAudio: The script starts by importing the pyaudio module, which provides an interface to the PortAudio library for audio input and output.

2. Audio Parameters: The script defines several audio parameters:

   • chunk: The size of each audio chunk to be read in bytes.
   • FORMAT: The audio format to use, in this case, 16-bit signed integer (paInt16).
   • CHANNELS: The number of audio channels (1 for mono).
   • RATE: The sampling rate in Hertz (44100 Hz is a common value).

3. Opening an Audio Stream: The script initializes a PyAudio object (p) and uses it to open an audio stream for recording. The stream is configured with the specified parameters (FORMAT, CHANNELS, RATE, input=True). Setting input=True indicates that this stream is an input stream for recording audio.

4. Recording Audio: The read method on the audio stream is used to read a single chunk of audio data. The size of the chunk is specified by the chunk parameter. The data variable now contains the raw audio samples in bytes.

5. Printing Raw Samples: The script then uses a list comprehension to iterate over the bytes in the data and convert each byte to its ordinal integer value. These ordinal values represent the amplitude of the audio samples at each point in time. These values are printed to the console.

This script essentially captures a single audio chunk from the default input device and prints the raw sample values. It demonstrates basic audio recording capabilities using PyAudio.

import pyaudio

chunk = 1024
FORMAT = pyaudio.paInt16
CHANNELS = 1
RATE = 44100

p = pyaudio.PyAudio()

stream = p.open(format = FORMAT,
                channels = CHANNELS,
                rate = RATE,
                input = True,
                frames_per_buffer = chunk)

data = stream.read(chunk)
print [ord(i) for i in data]