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SoundUP

Algorithmic
Audio Upscaling

A cross-platform tool for audio processing

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SoundUP program interface for audio processing

Preprocessing & Enhancement

Synthesis: Harmonics

Synthesis: Textures

Synthesis: Attacks

Blending & Post-processing

Remastering & Upsampling

De-clipping

Transient Enhancement (ATR)

Stereo Correction (ASC)

A True Enhancer

In a desperate search for an 'audio enhancer,' you've likely stumbled upon various services offering AI enhancement, which in reality are just equalizers or denoisers. Quite the improvement, isn't it? SoundUP offers the user not just a simple equalizer, but true audio synthesis.

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And all of this - without AI!

Magic?

No, just simple mathematics.

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Frequently Asked Questions

How does SoundUP differ from 'AI enhancers'?
SoundUP doesn't 'enhance' poor quality audio with equalizers and denoisers. Frankly, that's what the vast majority of online services do. Instead, SoundUP performs audio synthesis. In a way, it's like Spectral Band Replication (SBR), only better.
What music genres is the program suitable for?
Absolutely any. The algorithms analyze the harmonic and textural structure of any audio, whether it's classical music, an electronic track, a podcast, or an old rock recording. Deep settings allow you to tailor the synthesis to the specific material.
Is the program CPU-intensive?
Audio processing is a resource-intensive task. However, the program is optimized with machine code transformations and supports multi-threading to use the power of modern processors as efficiently as possible. The number of CPU cores used can be changed in the settings if the system starts to lag during processing.
When is the release planned?
The release of the first version (at least the Community Edition) is planned for September 12, 2025. You will be able to try the program in just a few days!
What's the difference between Harmonics, Textures, and Attacks?
These are the three pillars of our synthesis. Harmonics are the tonal, musical part of the sound. Textures are the 'airy', noisy component (hiss, ambience). Attacks are the sharp, percussive bursts. Separate controls allow for precise recreation of the original sound's character in the HF range.
My upscale sounds too harsh. How can I fix this?
Try reducing the 'Attack Weight' and 'Harmonic Weight' in the 'Blending' module. You can also increase 'HF Peak Smoothing' in the 'Naturalness' module or decrease 'Max Gain' in the 'Sibilance Enhancer' if the issue is with sibilant sounds.
What does 'deterministic' upscaling mean?
It means that with the same settings and the same source file, the result will always be 100% identical. Unlike AI, there is no element of randomness. You have full control over the process, and it is completely predictable.
Why is HPSS (Harmonic/Percussive Separation) used?
HPSS allows us to analyze the tonal and percussive parts of the LF signal separately. This is key to quality synthesis: tonal 'grains' are used to create HF harmonics, while percussive 'tiles' are used to create HF textures and attacks.
When should I use 'MP3 Smoothing'?
This module is ideal for audio files compressed at a low bitrate (e.g., old 128kbps MP3s). It finds and 'heals' characteristic blocky artifacts in the HF range, preparing a clean spectrum for further upscaling.
What's the difference between 'General' and 'Vocal' resonators?
The 'General Resonator' works across the entire spectrum, enriching any instrument with harmonics. The 'Vocal Resonator' is specifically tuned to the frequency ranges and harmonic series characteristic of the human voice to add 'body' and warmth.
Will 'De-clipping' fix a heavily overloaded track?
It can significantly improve the situation by restoring the shape of 'squared-off' peaks and bringing back some dynamics. However, with very severe and prolonged distortion, complete recovery is impossible. It works best on short, impulsive overloads.
What is 'Remastering' and when is it needed?
This module is used to increase the original sampling rate (e.g., from 22050 Hz to 48000 Hz). It doesn't just add zeros but intelligently reconstructs the missing samples. Use it if you are working with files in old formats or if an auto-scan shows a low original frequency.
What does 'Spectral Deconstruction' do?
It's a powerful final polishing tool. It 'disassembles' the already synthesized HF signal back into tonal, noise, and transient parts, allowing you to change their balance. For example, you can make the 'air' (noise) quieter without affecting the clarity of cymbals (transients).
The stereo image has become strange. What should I adjust?
Pay attention to the 'Stereo Correction (ASC)' module. Try reducing the 'Width Strength' if the sound has become too wide, or adjust the 'Number of Bands'. Sometimes stereo problems can arise from heavy processing of the Side channel; check the synthesis settings.
What is ATR (Transient Enhancement)?
ATR (Advanced Transient Reconstructor) is a module that makes sound attacks clearer and more impactful. It finds percussive moments in the track and slightly enhances their initial phase without increasing the overall volume. Excellent for drums and percussion.
How do the 'Weights' in the 'Blending' module work?
These are your main controls for the final timbre. They determine which of the three synthesized components (Harmonics, Textures, Attacks) will dominate the final HF signal. Increasing the harmonic weight will give you a cleaner, more musical sound. Increasing the texture weight will result in a more 'airy' and hissing sound.
What are the limitations of the free version?
The free version (Community Edition) provides core functionality: resampling and HF upscaling with universal, well-tuned parameters. All fine-tuning, preprocessing, post-processing modules, and batch processing are disabled.
Is the SoundUP Pro license perpetual?
Yes. By purchasing SoundUP Pro, you get a perpetual license for the current major version (e.g., all updates within version 1.x.x). Major upgrades (e.g., to version 3.0.0) may require a paid upgrade with a significant discount for existing users.
Can I install the program on multiple computers?
The standard Pro license is for a single user and can be used on two computers (e.g., a desktop and a laptop), but not for simultaneous use.
How will I receive updates?
The program has a built-in update check system. When a new version is released, you will receive a notification and can download it directly from the application or our website.