Pneumatic actuators are commonly used for motion control in robotics, but they are not typically used for sound generation.

Audio processing in robotics serves various purposes, including noise reduction, signal enhancement, and feature extraction for tasks like speech recognition and environmental sensing.

Emotion recognition is not a common application of audio in robotics, as it typically requires more advanced processing and analysis techniques.

Analog-to-digital conversion (ADC) is the process of converting an analog audio signal into a digital representation that can be processed by a computer or microcontroller.

Laser microphones are not commonly used in robotics due to their high cost and complexity compared to traditional microphones.

Digital-to-analog conversion (DAC) is the process of converting a digital audio signal into an analog representation that can be amplified and played through speakers or other audio devices.

Planar magnetic speakers are not commonly used in robotics due to their larger size and higher cost compared to other types of speakers.

Signal enhancement is the process of improving the quality of an audio signal by removing noise, boosting weak signals, and adjusting frequency response.

Gyroscopes are not commonly used as audio sensors in robotics, as they are primarily used for measuring angular velocity.

Feature extraction is the process of identifying and extracting meaningful information from an audio signal, such as pitch, formants, and energy levels.

Gait control is not a common application of audio feedback in robotics, as it typically relies on proprioceptive sensors and motor control algorithms.

Audio-based navigation, manipulation, and interaction all involve using audio signals to control the movement of a robot.

Noise interference, reverberation, and occlusion are all common challenges in audio processing for robotics.

Audio-based interaction involves using audio signals to communicate with a robot, including speech recognition and natural language processing.

Speech recognition, sound localization, and emotion recognition are all common applications of audio in human-robot interaction.