Frequently Asked Questions
What audio tools does SoundTools offer?
SoundTools offers 13+ free audio tools including: Sped Up Audio (speed up to 120% without pitch change for TikTok trends), TikTok Slowed + Reverb (viral 80% speed slowed audio), Bass Boost (enhance low frequencies for car audio and gym music), 8D Audio (immersive spatial surround sound), Nightcore (125% speed with pitch shift), Nightcore Reverse (75% dramatic slowed audio), Vaporwave (65% aesthetic nostalgic audio), Slowed + Reverb (customizable slowed audio with reverb), Audio Converter (convert MP3, FLAC, WAV, AAC, OGG), Video to Audio (extract audio from video), Audio Trimmer (cut and trim audio), Volume Booster (increase loudness), and Metadata Editor (edit tags and cover art). All tools are free, fast, and require no software installation.
How do I speed up a song without changing pitch?
Use our Sped Up Audio tool. Upload your song, and it will speed up to 120% (or custom speed from 100-150%) while preserving the original pitch perfectly. This creates the trending "sped up audio" effect popular on TikTok and Instagram without the chipmunk sound you get from pitch shifting. Vocals sound exactly like the original artist - just faster and more energetic.
How do I make TikTok slowed and reverb audio?
Use our TikTok Slowed + Reverb tool. Upload your audio file, click the TikTok Slowed preset (which sets your audio to 80% speed with medium reverb), preview it to hear the viral sound, then click 'Create TikTok Slowed' and download. This creates the exact slowed and reverb sound used in millions of TikTok videos, Instagram reels, and trending social media edits.
How do I add bass to a song?
Use our Bass Boost tool. Upload your audio, click the Bass Boost preset (which enhances low frequencies by +8dB for powerful punch), or customize the amount from 0-15dB. This makes kick drums hit harder, basslines deeper, and creates that chest-thumping impact perfect for car audio, gym playlists, EDM, hip-hop, and bass-heavy content.
What is 8D audio and how do I make it?
8D audio is an immersive spatial sound effect that makes music appear to move around your head in a circular pattern. Use our 8D Audio tool to create it. IMPORTANT: You must use headphones to experience 8D audio - it doesn't work with speakers. Upload your song, click the 8D Audio preset, preview with headphones to feel the sound moving around you, then download. Perfect for ASMR-like listening experiences and viral audio content.
Are SoundTools audio tools completely free?
Yes, completely free with no subscriptions, no hidden fees, no file limits, no watermarks, and no required sign-ups. All 13+ audio tools including sped up audio, TikTok slowed, bass boost, 8D audio, nightcore, vaporwave, audio converter, and all others are free to use unlimited times. We support the site with ads to keep all tools free for everyone forever.
Do I need to download software to use SoundTools?
No! All SoundTools audio tools work entirely in your web browser using cutting-edge web technology. No downloads, no installations, no plugins, no apps required. Just visit the site on any device, upload your audio, process it instantly, and download the result. Start creating sped up audio, bass boosted tracks, 8D spatial audio, or any effect immediately with zero setup.
What audio formats does SoundTools support?
SoundTools supports all major audio formats including MP3, FLAC, WAV, AAC, OGG, and WMA. Our Audio Converter can convert between any combination of these formats. All effect tools (sped up, slowed reverb, bass boost, 8D audio, nightcore, vaporwave) accept multiple input formats and output high-quality MP3 (320kbps) for maximum compatibility.
How long does audio processing take?
Most audio files process in under 30 seconds. Simple effects like bass boost, sped up audio, or format conversion are nearly instant (5-15 seconds). More complex effects like slowed + reverb with heavy processing or 8D spatial audio take 20-40 seconds. Processing time depends on your file size and the specific tool, but even large files typically complete within a minute.
Can I use SoundTools audio in my TikTok, Instagram, or YouTube videos?
Yes, you can use audio created with SoundTools in your content for TikTok, Instagram Reels, YouTube Shorts, and other social media. However, if you're modifying copyrighted music (like creating a sped up or slowed version of a popular song), the original song may still be subject to copyright. TikTok and YouTube's Content ID systems may claim videos with copyrighted music. For best legal protection, use royalty-free music or music you have rights to. Many creators successfully use modified versions of songs as part of trends and transformative content.
What's the difference between Sped Up Audio and Nightcore?
Sped Up Audio (120% speed, same pitch) keeps the original pitch intact - vocals sound exactly like the original artist, just faster. This is more popular on TikTok because it sounds natural and professional. Nightcore (125% speed, higher pitch) makes everything higher-pitched creating that signature energetic, high-pitched nightcore sound popular for anime AMVs and gaming. Choose sped up for natural-sounding fast audio, choose nightcore for the classic high-energy altered sound.
What's the difference between TikTok Slowed and Vaporwave?
TikTok Slowed (80% speed, medium reverb 50%) is subtle, accessible, and perfect for viral social media content - the most popular slowed audio style. Vaporwave (65% speed, heavy reverb 80%) is more extreme, dreamy, and atmospheric - deeply slowed with intense reverb for aesthetic content and nostalgic vaporwave vibes. Use TikTok Slowed for mainstream appeal, use Vaporwave for experimental aesthetic audio.
Do the tools work on mobile devices?
Yes! All SoundTools audio tools work perfectly on mobile devices including iPhone, Android phones, iPad, Android tablets, and any device with a modern mobile browser (Safari, Chrome, Firefox). The responsive design adapts to small screens, making it easy to create sped up audio, bass boosted tracks, or any effect on-the-go. Perfect for content creators who work from their phones.
How is the audio quality after processing?
Excellent! SoundTools uses professional-grade audio processing algorithms to maintain maximum quality. Our tools preserve audio fidelity during speed changes (no pitch distortion with sped up audio), apply clean EQ for bass boost, create pristine spatial effects for 8D audio, and use high-quality encoders for format conversion. Output files are typically 320kbps MP3 for optimal quality and compatibility.
Can I preview audio before downloading?
Yes! Most tools include real-time preview functionality. Upload your file, adjust settings, then click the preview button (or press spacebar) to hear exactly how your audio will sound before downloading. For 8D audio, make sure you're wearing headphones for the preview. This lets you fine-tune settings and ensure perfect results before creating the final file.
Which tool should I use for my content?
For TikTok/Instagram trends: Sped Up Audio or TikTok Slowed + Reverb. For car audio/gym music: Bass Boost. For immersive listening: 8D Audio (headphones required). For anime/gaming: Nightcore. For aesthetic/vaporwave content: Vaporwave or Nightcore Reverse. For emotional edits: TikTok Slowed or Nightcore Reverse. For format conversion: Audio Converter. Browse our categorized tools on the homepage to find exactly what you need!