M-Audio WizooVerb W2 [58/132] Trimming silence from the start

8 Impulse Responses

A strong impulse at the beginning of the waveform is generally a telltale

sign that an impulse response contains direct sound. This causes undesir-

able cancellations when the wet and dry signals are blended, and True Ste-

reo reverb sounds far muddier when mixed down to mono.

If a loaded impulse response contains direct sound, deﬁnitely remove it by

activating Dir. WizooVerb W2 will then analyze the impulse response, ad-

just its level and remove direct sound automatically.

If you are unsure about the direct sound content, you can switch Dir on

and off as often as required or desired to hear the result of the optimiza-

tion process with and without Dir. Like Trim and Gain, Dir is non-destruc-

tive, so there are no adverse effects to contend with.

The comments accompanying impulse responses normally indicate whether or not they

contain direct sound. If this info is provided and you set Dir correctly before loading an

impulse response, you will achieve the same effect as processing it after loading.

Trimming Silence from the Start

Impulse responses are frequently preceded by superﬂuous silence before

the ﬁrst impulse kicks in. Use Trim to cut these blank bits automatically.

You can undo this at any time by deactivating Trim again.

Adjusting Levels

The big pot at the center serves as a Gain knob. If necessary, use it to ad-

just the impulse response’s level manually.

Saving Impulse Responses

If you have optimized an impulse response and are satisﬁed with the re-

sult, it’s a good idea to save it for later use:

1 Click on the Save button below the waveform.

2 The standard dialog for saving ﬁles opens, whereby the appropriate

folder for archiving User impulse responses is selected automatically.

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