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Frequently asked questions

  1. What is voind?
  2. How does it work?
  3. How do I browse the voind library?
  4. How can I sumbit my own material to be synthesized or processed?
  5. Why do you use ogg files instead of more common formats like mp3?

1. What is voind?

voind is an internet-based service aimed at the amateur and hobbyist musician. These are individuals who in their home studios dedicate part of their spare time to play and record instruments, create musical arrangements and experiment with sound design and audio production.

While today an important part of the audio generation and processing tasks is done within the computer, the traditional hardware unit, be it a synthesizer or a sound processing unit, is still a very much desirable item in every home studio.

This is where voind comes in: voind offers the amateur and hobbyist musician virtual access to audio generation and processing hardware for use in his audio and music production.

2. How does it work?

Order screen A typical scenario: an amateur musician having recorded a guitar part, is trying to achieve a particular sound he thinks would fit well in his latest and greatest song. He already has some guitar pedals in his home studio but none of those can pull out the sound he has in mind. He could invest some money on a second-hand guitar processing unit and try to get the sound he is looking for...

With voind he can now browse the
library of hundreds of different sounds in the "Guitar processors" category, choosing from a variety of equipment available. He can upload his own file with the clean recorded guitar sound ( listen to it here play it ) and have it processed by the actual equipment with the settings he selected, receiving a sample of each of the resulting sound files. He can finally decide to use a particular sound ( like this play it ) and, for a small amount receive the full-quality audio file to include in his final work. Of course he can also become so impressed with that particular equipment that he decides to go out and buy it.

This works well for every type of audio synthesizing and processing hardware that can be set up from a computer. The system runs completely unattended and the amateur and hobbyist musician can choose to connect his own equipment to the voind network to produce audio material while he is sleeping and receive a percentage of the revenue generated by his equipment.

3. How do I browse the voind library?

The voind library is a collection of sample sounds produced by the equipment currently available in the network. You can start by selecting an Equipment Type and then the Equipment itself. A list with the Preset Types for that equipment is then presented and the individual presets are shown below.

For each of the presets one or more samples can be available. These are compressed ogg files with the actual sound produced by that particular preset. These sounds are produced from small audio/midi fragments that we think can best demonstrate the preset sound.

When the library is being browsed by a registered User, three clickable stars allow the User to score each of the presets. The score is automatically saved along the User profile.

4. How can I submit my own material to be synthesized or processed?

Basically there are two types of equipment on the voind network:
  • Synthesizers
  • Processors
The main difference is that Syntesizers accept a MIDI file as the input material while Processors use AUDIO files as input material. Both types of equipment will produce AUDIO files as their output.

MIDI files are special binary files that contain information about a musical performance, almost as if every physical action of a musical performer was recorded to be played later. These files have information about WHEN a particular NOTE was turned on (NOTE ON) and its volume (VELOCITY), as well as the moment each note was turned off (NOTE OFF). This not the only type of data that is in a MIDI file. Other types of information like the positioning of the sound within the stereo field, the values of certain parameters that control how much the sound is BENT upwards or downwards, and even data that can be used to select different sounds (PROGRAM CHANGE) are arranged in a complex system of messages that are saved as MIDI files and/or transmitted trough MIDI cables.

For more information about MIDI please visit
this site.

MIDI files can have up to 16 "tracks" which can be seen as different instruments in a performance. In fact there are 3 types of MIDI files: A Type 0 MIDI file contains only one track. A type 1 MIDI file may contains 2 or more tracks containg information for playing several instruments simultaneously.

The synthesizer tasks in voind are preset-oriented meaning that only one "instrument" will be played at a time. This is not a limitation but instead a requirement from the way a song is "built" from individual tracks that should be kept independent troughout the production phases until the final mix.

So donīt be surprised if the fancy MIDI file (type 1 or 2) that sounds so impressive when played in your media player comes back as a boring monophonic performance when synthesized by voind. Most of sequencers in use today allow a midi track to be exported to a type 0 MIDI file. This is the type of file that voind expects.

If you are going to use a MIDI file with several tracks you may indicate what particular track should be used to feed the synthesizer. If you select "All tracks", all the information on the various tracks will be "smashed" into a single track that will then be used to feed the synthesizer.

For input audio files voind accepts wave files (wav) in several formats. The most common format is 41Khz 16 bits mono/stereo, altough for some applications we might accept higher resolution formats. The output files are also wav files with the same format as the input file, except where mono-to-stereo or stereo-to-mono conversions are needed. For example an input guitar file will allways be mono, but its output might me mono or stereo depending on the equipment.

In any case you first have to upload the file you want to use as the input material. You can upload files from the "My Files" section or directly when you are creating a new order.

When you create an order you can specify several tasks (up to 10) each one with a different equipment, preset and input file. You can also put a label on your order to help you identify it later. After you press the "Submit" button, the individual tasks are sent to the selected equipments for production. When all of the output files have been collected, the system will then produce the sample ogg files. These files can be freely dowloaded. You can even tell (on your profile page) that these files should be sent to you as attachments on an email message.

While your order is being produced its status will be updated in the "My Orders" section.

5. Why do you use ogg files instead of more common formats like mp3?

An important feature of the site is the use of the ogg file format as a vehicle for the output sounds. Ogg files are compressed audio files (like mp3) but (in my opinion) can sound subjectively better than mp3 files for the same compression level. However the main reason is that (unlike mp3) the ogg file format is non-proprietary and patent-free. Click here to learn more about ogg and to get software and codecs to play ogg files.