Manual AAS Lounge Lizard EP-4 (page 45 of 55) (English)

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Audio and MIDI Settings 45

7 Audio and MIDI Settings

This chapter explains how to select and conﬁgure Audio and MIDI devices used by Lounge Lizard

EP. Audio and MIDI conﬁguration tools are accessed by clicking on the Audio Setup button located

in the lower left corner of the Lounge Lizard EP interface and the MIDI button located just below

the MIDI led in upper part of the interface.

Note that in plug-in mode the audio and MIDI inputs, sampling rate, and buffer size are set by

the host sequencer.

7.1 Audio Conﬁguration

7.1.1 Selecting an Audio Device

Audio conﬁguration tools are available by clicking on the Audio Setup button located in the lower

left corner of the Lounge Lizard EP interface. The Audio Setup dialog ﬁrst allows you to select

an audio output device from those available on your computer. Multi-channel interfaces will have

their outputs listed as stereo pairs.

On Windows, the audio output list is organized by driver type. The device type is ﬁrst selected

from the Audio Device Type drop-down list. If you have ASIO drivers available, these should be

selected for optimum performance. The Conﬁgure Audio Device button allows you to open the

manufacturer’s setup program for your audio interface when available.

Once the audio input has been selected, you can then select a sampling rate and a buffer size

from those offered by your audio interface.

7.1.2 Latency

The latency is the time delay between the moment you send a control signal to your computer (for

example when you hit a key on your MIDI keyboard) and the moment when you hear the effect.

Roughly, the latency will be equal to the duration of the buffers used by the application and the

sound card to play audio and MIDI. To calculate the total time required to play a buffer, just divide

the number of samples per buffer by the sampling frequency. For example, 256 samples played

at 48 kHz represent a time of 5.3 ms. Doubling the number of samples and keeping the sampling

frequency constant will double this time while changing the sampling frequency to 96 kHz and

keeping the buffer size constant will reduce the latency to 2.7 ms.

It is of course desirable to have as little latency as possible. Lounge Lizard EP however requires

a certain amount of time to be able to calculate sound samples in a continuous manner. This time

depends on the power of your computer, the preset played, the sampling rate, and the number of

voices of polyphony used. Note that it will literally take twice as much CPU power to process

audio at a sampling rate of 96 kHz as it would to process the same data at 48 kHz, simply because

you need to calculate twice as many samples in the same amount of time.

i dont have a serial number or challenge code how do i get mine to authorize Submitted on 18-1-2023 at 12:41
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AAS Lounge Lizard EP-4 Manual

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