SimpleFFT vs KeepWaves

This app can easily analyze the frequency of sound. For the sound of the recording file recorded at each refresh time interval, FFT is executed and displayed for the four voices collected one after another at each refresh interval.

KeepWaves transforms ordinary audio recordings into extraordinary visual memories that you can see, hear, and share. Far more than just another voice recorder, KeepWaves creates beautiful, customizable waveform visualizations of your audio that turn sound into art. Whether it's your child's laughter, a heartfelt message from a loved one, a musical idea, or ambient sounds that take you back to a special place, KeepWaves lets you preserve these acoustic memories in a way that engages both your ears and eyes. Every recording becomes a unique visual memory that's as beautiful to look at as it is meaningful to hear. With an intuitive interface designed for both casual and advanced users, KeepWaves makes it simple to record high-quality audio, visualize it in real-time, and customize the appearance with a wide range of visual styles and effects. You can organize your memories by date, search through your collection, and easily share your creations as audio files, images, or videos. KeepWaves turns the invisible world of sound into visible art, helping you preserve and share the acoustic moments that matter most in your life. Because some sounds are too precious to forget. Beautiful Waveform Visualization - Transform your audio into stunning visual art with customizable waveform displays High-Quality Audio Recording - Capture crystal-clear sound with adjustable sensitivity and gain controls Real-Time Visualization - Watch your sounds transform into visual waves as you record Advanced Audio Processing - Fine-tune your recordings with tools for amplification, depth, echo, and more Multiple Export Options - Share your memories as audio files, static images, or videos with animated waveforms Intuitive Organization - Easily find your recordings with date filtering and powerful search capabilities Interactive Playback - Experience your sounds with speed controls and waveform scrubbing Customization Options - Personalize your waveforms with different colors, styles, and visual effects