Audio frequencies
- Audio controlMusicMicrophoneProfessional soundSoundwaveSpeakerAudio receiverHeadphonesData visualizationSoundAudio interfaceDigital interfaceMixing boardAudio equalizerAudio mixerAudio equipmentGold connectorsSpectrogramsSynthesizerAudioMIDI keyboardRecording equipmentWaveformDigital screenKnobs and faders