Three ways to convert the sample rate of an wav audio file to 16K (python code)

First way

To convert the sample rate of an audio file to 16K, you can use Python’s wave module and scipy.signal module. The specific steps are as follows

Just use reportlab to add a full-screen text watermark to a PDF file (Python code)

We use SimpleDocTemplate and PageTemplate to define PDF files and page templates. The difference is that when drawing the watermark, we use the onPage parameter to use the watermark ()…

Use PyAudio, pyqt, click the button to record wav, and click stop

In the tested code, RecordThread is a thread class that inherits from QThread and is used to record audio.

The thread uses PyAudio to open the microphone input stream internally and loop to…

Python code to insert symbols at multiple specified positions in a string

You can use loop and string slicing operations and string concatenation operations to insert the symbol -at multiple specified positions in the string.

Python code, pose change between two quaternions

In this example, we have two quaternions q1 and q2, representing the initial pose and the final pose, respectively.

We first calculate the difference between these two quaternions using the quat_diff function.

Finding continuous numerical peaks and troughs of one-dimensional arrays

The wav audio is cut into multiple small audio files according to the duration (python code can be run)

Speech wav segmentation is written as a function, which can be reused later, and the test effect is normal. wav file is too long and inconvenient to deal…

Numpy find duplicate lines in two two-dimensional arrays (with code)

Numpy Two N * M-dimensional, two-dimensional arrays a and b, in behavioral units, find rows that exist in both a and b, and the same rows do not necessarily appear in the same row position, by iterating over each…