Instruction Manual The Midiverb connects easily between any line-level sig- nal source and any . ranty repair to ALESIS or an authorized ALESIS warranty. REVERBS. Chorus-Reverb-Delay-EQ. Small Bright Room 1. Small Bright Room 2. Small Warm Room. Small Warm Chamber. ALESIS. MidiVerb 3. Reference Manual SECTION 1. MIDIVERB III QUICK START. The Alesis MIDIVERB III is a high quality multi-effects unit which.

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Digital reverb is an effect that is used in just about every recording made. When MidiVerb II is switched on the first program in the mapping table is read and activated. I also thought it would be complicated to program the effects. The instruction sequence DSP program consisting of bytes is continuously fetched in loop at 8 MHz clock speed from Program store SRAM so that the whole program gets executed during one sample cycle The quality of the Alesis MidiVerb 4’s reverb is comparable with many reverb units used in professional studios, being described as ‘dense’ and ‘natural’.

There is no dedicated ADC device involved.

I tried to google for schematics, service manual and a datasheet for the DSP chip. CD, in comparison, uses a meager 16 bits.

Alesis Midiverb II Instruction Manual

The quality of the digital audio processing is excellent with bit conversion and bit internal processing. In comparison to some units that can only produce one effect at a time mixiverb remember that you’ll always need reverbthis unit allows up to three simultaneous multieffects.


Analog-to-Digital conversion is managed by method of ‘successive approximation’. None that I know of worth checking: There’s not much ‘analog’ in this box, I must admit, but I was just wondering why it sounds so much better than the later MidiVerb III. If you can program your remote control you can work one of these. Midiverb II Program Guide. The Alesis MidiVerb 4 reverb and effects processor is a low cost effects unit that functions according to normal professional practice, and therefore can be seen as an ideal introduction to reverb and effects units.

I give this product two thumbs up. Alesis Midiverb 4 Review – Record-Producer.

Actually only bytes required to store a DSP program are addressable. Although the pot for adjustment is easily accessible I have no idea how to do this procedure as it would require sending values 7FFF and down to the DAC but only the DSP can do this so you’d have to grab direct control over the DSP SynthMania PlanetZero lists and forums: The most impressive thing to me was the all of the different sounds and clarity.

Trimpot for MSB error adjustment procedure. As soon as I got it plugged I noticed how simple it was. All comments, clarifications, corrections, rectifications, amendments and revisions are warmly welcome here. Datasheets for more ‘interesting’ chips, as well as the user manual and program chart can be downloaded below. Processed signal is mixed with the ‘dry’ one in analog after the conversion MIX button.


Here are my findings based on observations, measurements and some speculation about what’s going on in MidiVerb II. Automatically a steep price came to mind.

MidiVerb II is an amazing machine – in the era of cheap silicon and huge memory chips it’s still being used widely after 20 years or so in existence. This results in 15KHz bandwidth for the processed audio signal after Digital-to-Analog conversion. This memory consisting of memory locations is only visible to the DSP. Further information on the Alesis MidiVerb 4 reverb and effects processor.

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And came back with nothing so I had to open the box and take a closer look. In addition to reverb, the Alesis Midiverb 4 also provides chorus, flange, delay and pitch changing effects. There are also many other features on it that I have never and probably will never use, but that’s only because I’m very happy with what it does to my sound.

DSP handles one sample at a time. Although not a part of normal professional studio practice, this unit features automatic input level sensing, which means that- if you want – you can pretty much stop worrying about optimizing the input signal level and concentrate on the sound you are hearing.