In this audio recording titled "TV Test Tone with a Frequency of 1kHz at -20dBFS, Identifier 028654", the listener encounters a specific type of sound effect, commonly known as a test tone. This sound is specifically tuned to a frequency of 1kHz, which is a standard in audio testing for its ability to be picked up by most audio equipment and it's easy recognition by the human ear. The sound level of this test tone is set at -20dBFS, indicating it's relatively quiet in the audio spectrum. This specific audio file can be identified by its unique identifier, 028654. This recording is a practical tool, often used in TV and broadcasting settings, to calibrate and adjust the audio levels of the equipment to ensure optimal performance and sound quality.