Pitch

A relative measure of the frequency

Measured in cents

A shift of one octave is 1200 cents 12 semi-tones (half-steps) in one octave One semi-tone is 100 cents

Changing the pitch by p cents corresponds to multiplying the frequency by the factor m=2 ^(p /1200)

Problem 4 Consider the MIDI pitch wheel change message below. byte index value (hex) 0 EO 1 13 2 20 3 00 Assuming a pitch bend range of -300 to 300 cents, compute the pitch change for this message. Give your answer in cents. Problem 5 A MIDI device will potentially have multiple control knobs and sliders. For example, a synthesizer typically will have a volume control. Turning the knob or moving the slider will generate a MIDI control change message, which has message number Bh. The byte at index 1 of a control change message gives the control number; i.e., tells us which control knob or slider has been changed. In the case of a volume control, the message generated is a channel volume message, which is assigned a control number of 7h. The byte at index 2 of the message gives the control value in the range 0 to 127). Consider the channel volume change message byte index 0 1 value (hex) B3 07 2 3 35 00 What is the volume control value in decimal)? Problem 4 Consider the MIDI pitch wheel change message below. byte index value (hex) 0 EO 1 13 2 20 3 00 Assuming a pitch bend range of -300 to 300 cents, compute the pitch change for this message. Give your answer in cents. Problem 5 A MIDI device will potentially have multiple control knobs and sliders. For example, a synthesizer typically will have a volume control. Turning the knob or moving the slider will generate a MIDI control change message, which has message number Bh. The byte at index 1 of a control change message gives the control number; i.e., tells us which control knob or slider has been changed. In the case of a volume control, the message generated is a channel volume message, which is assigned a control number of 7h. The byte at index 2 of the message gives the control value in the range 0 to 127). Consider the channel volume change message byte index 0 1 value (hex) B3 07 2 3 35 00 What is the volume control value in decimal)