Here are a few points to use in order to increase performance, sorted by priority:

BUFFER SIZE: This doesn't compromise any aspect of audio quality. Thus it is the first place the user should try to optimize system performance.

A buffer of 512 is optimal. Lower buffer sizes will increase the peak CPU consumption. Higher Buffer sizes may reduce the average CPU consumption, but the peaks will be similar.

Beware that not all hosts have friendly default buffer settings. In fact, ASIO host users use small buffers for lower latency, as do people who use virtual instruments.

CPU MODE SWITCH

The CPU Mode switch at the top left allows switching to low CPU mode. This can cut peak consumption by a third. This mode gives excellent results, and the quality difference will be negligible for most applications. It is not the purist path, but it is a fine way to convolve the original sample with good accuracy.

COMPONENTS

Efficient Stereo consumes the same amount of resources as the Mono to Stereo, and about half of what the Full Stereo consumes. While it presents a compromise on the purist natural reverb, the overall sound quality isn't compromised in any way, and it is often a more practical choice. You may like Efficient Stereo as much as the Full Stereo in most cases.

CONVOLUTION LENGTH

You can set the convolution control to a shorter time. While the compromise is obvious (shortening the Reverb Tail decay time or gating it at a certain level where it would naturally continue to decay), please note that the noise floor in IR-1 is around –92dB to -106dB, and there is no compromise in sound quality.

The original convolution length shows in the IR properties display. Sometimes shortening by a bit presents negligible compromise on sound and meaningful savings in CPU, but the savings is in steps.

In other words, while not every millisecond will free some CPU, every 100ms should. You can get great results by using a shortened convolution length and using the envelope to smooth the slope so that it doesn't sound gated. On continuous material it

Waves IR-1 software guide page 39 of 40

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Waves IR-L, IR-360, IR-1 manual CPU Mode Switch
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IR-360, IR-L, IR-1 specifications

Waves is a trusted name in the audio processing industry, and its range of plugins has consistently set the standard for professional audio production. Among its extensive lineup, the Waves IR-1, IR-L, and IR-360 are renowned for their advanced convolution reverb capabilities, delivering studio-quality reverb effects that enhance any sound environment.

The Waves IR-1 is a high-quality convolution reverb plugin that offers exceptional sound quality and versatility. Featuring a wide array of impulse responses derived from actual acoustic spaces, the IR-1 allows users to recreate the sound of various environments, from lush concert halls to intimate rooms. One of its standout features is the ability to manipulate the reverb tail, making it possible to fine-tune the duration and character of the effect. The IR-1 also includes controls for early reflections, damping, and pre-delay, enabling users to craft a reverb that perfectly complements their mix.

The Waves IR-L is a more streamlined version of the IR-1, designed for professionals who demand high-quality reverb but prefer a simplified interface. While it retains the core convolution technology and impulse response library of the IR-1, the IR-L focuses on ease of use, allowing for quick adjustments without sacrificing sound quality. One innovative feature is its “scalable” plugin structure, which lets users modify the plugin interface size based on their screen space. This makes IR-L ideal for both studio work and live sound applications.

Waves IR-360 is designed for immersive audio and 3D sound environments. By providing surround sound capabilities, it enables users to place sounds in a 360-degree space, making it ideal for film scoring and virtual reality audio. Like its predecessors, the IR-360 includes a rich selection of impulse responses, but it also integrates features tailored for spatial audio creation. This includes customizable parameters for azimuth and elevation, allowing precise control over sound placement in three-dimensional space. Additionally, the IR-360 supports various surround formats, making it versatile for multiple audio production contexts.

In summary, Waves IR-1, IR-L, and IR-360 offer powerful and innovative convolution reverb solutions, each designed with specific user needs in mind. With their advanced capabilities, extensive impulse response libraries, and user-friendly interfaces, these plugins cater to a wide range of audio production applications, setting new standards in reverb technology. Whether for music production, post-production, or immersive audio experiences, these tools are essential for achieving high-quality soundscapes.
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