home *** CD-ROM | disk | FTP | other *** search
-
- MUSIC CALC V1.05 By Steve MacMillan
-
- Music Calc is a Time Base Calculator, a simple Numeric
- Calculator, and a tool for figuring tape location at a SMPTE time
- code address by entering Bar or Beat numbers. Conversely, Bar or
- Beat numbers can be computed by entering a SMPTE address. Music
- Calc also will figure delay or DDL timings by song tempo.
-
- Time Base Mode:
- Time base calculations are useful in adding song running
- times to figure total length (How many songs can I fit on a
- cassette?). Or if a eight-bar song segment is ten seconds long,
- how long is 32 eight-bar segments?
- All time entry are in the 24, 25, and 30 frame SMPTE
- standards (HH:MM:SS:FF). Drop frame is not yet supported. All
- calculations are based on a 24 hour clock. Times may be added or
- subtracted from each other or may be multiplied or divided by real
- numbers.
-
- Numeric Mode:
- The numeric mode is a simple numeric calculator.
-
- Tempo Screen:
- By selecting the Tempo key you can enter your song's tempo in
- beats per minute, and the proper time signature can be selected.
- Tempo is important for all song position calculations and it
- selects the tempo for the delay window. Several common time
- signatures can be selected or the Other key lets you enter an
- unusual one. The proper time signature is important for all Bar to
- SMPTE calculations and also affects the note value vs. beat per
- minute calculations on the delay window. The Tap key allows Tempo
- to be tapped in on the space bar. After selecting the Tap function
- the first tap on the space bar starts the timer and after 16 more
- taps MUSIC CALC computes the tempo.
-
- Delay Window:
- The Delay Window shows a list of millisecond timings for note
- values at your selected tempo and time signature. Ex: For a
- quarter note echo to be in time with a song at 120 bpm (4/4 time)
- set your DDL to 500 ms. The Delay Window also computes the time in
- seconds for four bars and the number of frames (@ 24 frames per
- second) per beat. The time in seconds for four bars is useful if
- you don't know the tempo of the song. Time four bars of the song
- and then adjust the Tempo on the Tempo Screen until the 'Time for
- Four Bars' on the Delay Window matches, or much quicker use the
- 'Tap' key on the Tempo Screen.
-
- Bar # Screen:
- Use the Bar # key to compute song position. You must first
- enter the SMPTE location of Bar ONE of your song. This is done by
- the Start key (click on Start to view current start time and Enter
- to exit, any numeric key starts time entry). All song position
- calculations are referenced to the Start time.
- The two modes of operation are Calc Bar and Calc Time. With
- Calc Bar you enter either Bar or Beat numbers depending on the Bar
- or Beat keys, and Music Calc computes a SMPTE address. With Calc
- Time you enter a SMPTE address and depending on the Bar and Beat
- keys you get a Bar or Beat number. This can be very useful in
- figuring song length, or tape locations for various song segments.
- Or let's say you had planned on a midi sequence to start at one
- hour SMPTE time (01:00:00:00) and you wanted to add a two bar
- count off to your sequence. You could use Music Calc to determine
- the new start time of your expanded sequence (Calc Bar mode, enter
- -2) to still allow for beat one of the song to land on one hour.
-
- Stop Watch:
- This is just a simple stop watch accurate to a 100th of a
- second. The space bar starts and stops the clock. The undo key
- will reset the clock either while running or stopped. The return
- key will exit.
-
- Metronome:
- This is an audible metronome that runs at the tempo selected
- on the Tempo Screen. The return key will exit.
-
- SMPTE Mode:
- Use the SMPTE Screen to select the Frame Rate for all Time
- based math and Locate functions. The default is 30 frame per
- second. This is the rate used for almost all audio only
- productions. 24 frames per second (Film standard) and 25 frame
- (European EBU standard) are also available. Drop frame (American
- color video standard) is about 29.97 frames per second, and
- currently has me stumped.
-
- Configure File:
- It is possible to save Tempo, Time Signature, Start Time, and
- SMPTE Frame Rate during program exit by answering 'Yes' to the
- 'Save Config. File' query. These settings are automatically loaded
- the next time Music Calc is run.
-
- I believe Music Calc is accurate but I would love feedback
- as to bugs or desired features. To my knowledge, nothing like this
- exists on the ST and I hope this proves to be a useful program.
- Written in 100% GFA Basic.
-
- Enjoy! Genie address... S.MACMILLAN
-