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March 15, 2006
about 2 hours ago
How would you want this to work? When you say fast forward/ rewind, do you really mean going immediately to a specific time in the track? And what do you mean by queuing? The WAV Trigger already provides a load/pause function, which supports preloading multiple tracks and then resuming them so they start in sample-sync.
And are you talking about serial commands or trigger functions?
about a month ago
The WAV Trigger supports up to 2048 tracks. When the serial port is put into MIDI mode, midi channels and note numbers are mapped to track numbers as follows (with the current firmware): Track = (MIDI Channel * 128) + MIDI Note Number.
Because SD card memory is not an issue, I advise you to loop your sounds in the WAV file and just make the tracks longer than you’d ever hold a note. The WAV Trigger does not currently support arbitrary loop points or seamless looping - looping is always over the entire track and there can be a small (< 5ms) gap at the loop point.
Here’s a tutorial with links to some Mellotron sound files. Any instrument sample sets that you can load into a sound editor are potentially good to use with the WAV Trigger. I make my own using soft synths.
about 3 months ago
Not using an existing connector. You could always just solder 3 wires to the pins/pads of the 3.5mm jack.
about 4 months ago
You mean like this?
The WAV Trigger holds 2048 tracks vs the MP3 Trigger’s 255. There are few things the MP3 Trigger can do that the WAV Trigger can’t do better. Just saying.
Actually, you could connect an XBee S1 module directly to the WAV Trigger’s RX pin and send serial commands over XBee with no on-board Arduino. Just a thought.
Anticipating the first question… This version just updates the shipping firmware to the latest rev (v1.21) and updates the above product description with the latest firmware feature set. New capabilities include support for 2048 tracks, real-time playback speed/pitch control and enhanced trigger and MIDI features. It’s no different than if you had bought the previous version and updated the firmware.
Also, here’s the link to the Arduino serial control library, and here’s a short tutorial on serial control with an Uno.
about 5 months ago
You can easily set the WAV Trigger up to automatically loop a track on power up, without any jumpers or trigger connections. However the WAV Trigger can only loop on increments of it’s audio buffer, which is 128 samples long. Unless your wave file exactly fills the last buffer, there will always be some number of samples of silence at the loop point. It will be very small, as in a couple of msecs, but very likely not 0.
I always suggest using your sample editor to seamlessly loop your file many times and save it as a really long track - there’s plenty of space on the flash card. That way, the short gap will occur very infrequently.
about 6 months ago
Please contact me directly at info(at)robertsonics(dot)com and I’ll help you sort this out. Sorry for the inconvenience.
Update: I haven’t heard from you, but I did write up this post to help clarify.
Those comments apply only to the original hardware version (WIG-12000) and not to the current version (WIG-12897) of the WAV Trigger, wherein the missing cap has since been added to the design. (Mentioned in the comments just above this one.) I will try to make this more clear.
How are you changing banks? By changing the MIDI Channel on your keyboard, or with a trigger input using the BankUp/BankDn function? Firmware v1.04 and above added support for using MIDI Program Change messages to change banks. Is it possible that you’re sending Program Change messages? In any event, I’ll have a look at what else might have changed, although I’ve not heard any other reports of problems.
If it’s easy, can you try the versions between v1.02 and v1.10 and see which one breaks it?
By the way, I just posted v1.20, which increases the number of tracks from 999 to 2048. Filenames can now have 3 or 4-digit track numbers, up to “2048xxx.wav”. This version also maps all 128 MIDI notes to a bank and supports 16 banks (up from 10), so the MIDI to track number mapping has changed. If you’re using multiple banks, you’ll have to rename files with this version. See the release notes on the download page.
So it sounds like your conversion from MP3 to wav is wrong. Have you seen this video? If you simply aren’t able to convert a particular MP3 correctly, you can email it to me at info(at)robertsonics(dot)com and I’ll have a look.
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