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  2. Piano key frequencies - Wikipedia

    en.wikipedia.org/wiki/Piano_key_frequencies

    This is a list of the fundamental frequencies in hertz (cycles per second) of the keys of a modern 88-key standard or 108-key extended piano in twelve-tone equal temperament, with the 49th key, the fifth A (called A 4), tuned to 440 Hz (referred to as A440). [1] [2] Every octave is made of twelve steps called semitones.

  3. General MIDI - Wikipedia

    en.wikipedia.org/wiki/General_MIDI

    35 Acoustic Bass Drum or Low Bass Drum; 36 Electric Bass Drum or High Bass Drum; 37 Side Stick; 38 Acoustic Snare; 39 Hand Clap; 40 Electric Snare or Rimshot; 41 Low Floor Tom; 42 Closed Hi-hat; 43 High Floor Tom; 44 Pedal Hi-hat; 45 Low Tom; 46 Open Hi-hat; 47 Low-Mid Tom; 48 High-Mid Tom; 49 Crash Cymbal 1; 50 High Tom; 51 Ride Cymbal 1; 52 ...

  4. Tone stack - Wikipedia

    en.wikipedia.org/wiki/Tone_stack

    Notes at 200Hz and below are in the bass range, while the sounds between 200Hz and 600Hz make up the middle band. [2] Tone controls work by using adjustable band-pass filters to raise or lower the perceived volume of sounds in a specific range of frequencies (or band). For example, the high-pass filter selectively lets frequencies in the treble ...

  5. Bass (sound) - Wikipedia

    en.wikipedia.org/wiki/Bass_(sound)

    Bass (/ b eɪ s / BAYSS) (also called bottom end) [2] describes tones of low (also called "deep") frequency, pitch and range from 16 to 250 Hz (C 0 to middle C 4) [3] and bass instruments that produce tones in the low-pitched range C 2-C 4. They belong to different families of instruments and can cover a wide range of musical roles. Since ...

  6. MIDI tuning standard - Wikipedia

    en.wikipedia.org/wiki/MIDI_Tuning_Standard

    The frequency range starts at MIDI note 0, C = 8.1758 Hz, and extends above MIDI note 127, G = 12543.854 Hz. The first byte of the frequency data word specifies the highest equal-tempered semitone not exceeding the frequency. The next two bytes (14 bits) specify the fraction of 100 cents above the

  7. Tone control circuit - Wikipedia

    en.wikipedia.org/wiki/Tone_control_circuit

    Tone control is a type of equalization used to make specific pitches or frequencies in an audio signal softer or louder. It allows a listener to adjust the tone of the sound produced by an audio system to their liking, for example to compensate for inadequate bass response of loudspeakers or earphones, tonal qualities of the room, or hearing impairment.

  8. A440 (pitch standard) - Wikipedia

    en.wikipedia.org/wiki/A440_(pitch_standard)

    A440 (also known as Stuttgart pitch [1]) is the musical pitch corresponding to an audio frequency of 440 Hz, which serves as a tuning standard for the musical note of A above middle C, or A 4 in scientific pitch notation. It is standardized by the International Organization for Standardization as ISO 16.

  9. Bass management - Wikipedia

    en.wikipedia.org/wiki/Bass_management

    As some less expensive AV receivers offer only a fixed bass-management crossover frequency (often at 80 Hz) using one filter, Dolby 5.1-channel music mixing guidelines recommend that the LFE channel be rolled off at 80 Hz, otherwise frequency content between 80 Hz and 120 Hz could be lost. [5]