multimedia and video applications often require different audio formats and
have special audio requirements when it comes to working with music files.
Productiontrax.com delivers all of our royalty free music tracks and sound effects
in a convenient, instantly delivered MP3 download upon purchase. To ensure quality
and compatibility with our systems, composers are encouraged to upload MP3 files
to their accounts encoded at the highest possible rate, with ID3 tags version
2.2 and lower. While the MP3 files you download from our site are full quality
original audio files, we also offer several other audio formats. You should
always check with your audio engineer to see which file format is best for you.
Bit Rates and Frequencies
Sure you’ve seen the numbers, but what do they mean? Bit rate depths refer
to the number of audio samples per unit of memory. Generally, higher bit rate
numbers mean greater sonic quality and a wider dynamic range. The sample rate
frequency refers to the number of sound wave cycles over time. As with the bit
rates, higher numbers generally mean better quality. However, it is important
to note that when converting between two audio sample rates, lower sample rates
play “slower,” meaning that if you are not careful with sample rate
conversions, you can easily alter the pitch and length of a track. Audio CDs
generally play tracks that have been encoded at 16-bit 44.1kHz. TV broadcasts
usually use a sample rate of 44.8kHz, and digital formats show off their advantages
in the 24-bit range.
Along with Sound Designer II formats, AIF files are probably the most standard
audio format for Macintosh computers. AIF or AIFF stands for Audio Interchange
File Format. AIF files are generally large in size and contain a great deal
of audio data. It is not recommended that you use AIF files on PCs, and you
should convert AIFF files to WAVE files if you are using a PC to edit audio.
WAV or “Wave” files are the standard of choice for PC users. Wave
files can be directly played on the Macintosh without problems in most audio
editing programs. It is generally recommended, when transferring audio from
Mac to PC, that you convert the files to Wave format (while still on the Mac),
as the Resource from many file formats is lost when imported to a PC. The resource
contains detailed information about the format, Sample rate, and Bit definition).
PC sound effects are typically stored as small .WAV files that can be linked
to Windows events.
Productiontrax.com offers delivery of these audio formats in your choice of
16-bit and 24-bit definition and if necessary, additional mastering for an extra
handling charge. We handle all of the file conversions in house on the best
audio programs in the business, and ship your order out (usually) same-day on
CD-ROM. We also can provide an audio CD of the tracks you purchased for you
to add to your collection.