import wave
import os

def get_wav_sample_rate(filepath):
    try:
        with wave.open(filepath, 'rb') as wav_file:
            return wav_file.getframerate()
    except wave.Error:
        return None

def main():
    for filename in os.listdir('.'):
        if filename.lower().endswith('.wav'):
            rate = get_wav_sample_rate(filename)
            if rate is not None:
                print(f"{filename}: {rate} Hz")
            else:
                print(f"{filename}: Could not read sample rate")

if __name__ == '__main__':
    main()