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Review 6: MIDI
Review #6 - MIDI Theory (Stack #34502)
Question | Answer |
---|---|
What does MIDI stand for? | Musical Instrument Digital Interface |
What does MIDI do? | It allows communication between midi-capable devices. |
Name the 3 MIDI ports and describe their function. | IN - receives data OUT - transmits data THRU - passes data received at devices IN port |
Does the MIDI system transmit digital audio data or analog signal? | Neither - it carries no audio, only MIDI data. |
Over how many channels is MIDI transmitted? | 16 |
What device records, plays back and edits MIDI data? | A MIDI sequencer |
What do we call a MIDI instrument that can play multple programs, each assigned to its own MIDI channel? | Multi-timbral |
What is a MIDI workstation? | A multi-timbral sampler or synth with a built-in sequencer |
What sequencer fuunction is used to shift MIDI data to the closest available rhythmic value? | Quantization |
What may be good about quantization? | It corrects timing errors |
What may be bad about quantization? | It removes the human feel. |
What do we call the device needed to input/output MIDI when using a software sequencer? | A MIDI interface |
How can we allow the use of more than 16 channels? | An interface with multiple outs |
What is tempo and how is it measured? | The rate or speed of a performance and is measured in beats per minute (BPM) |
If we want to automate a mix of MIDI instruments or tracks recorded in the computer, must we use a mixing console with automation? | No, the program usually has its own automation features. |
What do we call a synth or sampler that is a program run in a computer? | Virtual or soft synth/sampler |
What do we call a synth or sampler that is self-contained? | A hardware synth/sampler |
What is an audio interface or sound card? | A method of inputting/outputting audio to and from a computer. |
What do we call the delay produceed between the time MIDI or audio is input and the time we hear the output? | Latency |
What is usually used to sync sequencers to multitracks? | MIDI Time Code |
What do we usually call the creation of a mix file within the sequencer/hard disk recorder? | Exporting or bouncing |
What is a cycle? | A complete change in air pressure or voltage |
What do we call the number of times per second a waveform completes a cycle? | Frequency |
What do we call the speed at which a waveform travels through a medium? | Velocity |
What is wavelength? | the distance it takes for a waveform to complete a cycle |
What do we call the amount af change in sound or signal's intensity? | Amplitude |
What is harmonic content? | The relative number and amplitude of overtones and harmonics contained in a sound (balance of frequencies in a sound) |
What describes how a waveform's characteristics change over time? | Envelope |
What do we call the time relationship of a waveform to a known time reference? | Phase |
What do we call changes in atmoshpheric pressure that occur from 20 to 20,000 times/sec.? | Sound |
What is audio signal? | Changes in voltage that represent sound. |
What do we call the visual representation of how sound changes air pressure or signal changes voltage? | A Waveform |
What is a sampler? | A digital recording and playback device with real-time control of pitch. |
Into what type of memory does the sampler generally record? | RAM |
What sampler function removes an unwanted part from beginning or end of sample? | Trim or Truncate |
What sampler function repeats all or part of a sample? | Loop |
How much of a copyrighted source may be sampled and used without the owner's permission? | None |