SpecWave vs PCM Audio Recorder

Key Features Real-time Spectrum Analysis (See Your Sound) - Instant Visualization: Captures ambient sound via microphone and presents it in beautiful "Line" or "Bar" chart styles, making pitch and volume crystal clear. - Key Data Capture: Displays the current peak frequency and total decibel level in real time, while automatically logging the maximum and minimum decibels for your session. - One-Tap Display Freeze: Tap the spectrum chart anytime to freeze the current frame, allowing you to observe and compare sound details at your own pace. - Multi-Source & Parameter Toggles: Switch between built-in and external microphones with a single tap, and toggle between log/linear frequency axes to suit your needs. - Microphone Gain Control: Easily adjust input sensitivity to your liking. *(Note: This app outputs raw relative values only; for high-precision acoustic measurement, please calibrate with a sound level meter first)* Audio Signal Generation (A Fun Health Check for Headphones & Speakers) - 3 Classic Waveforms: Built-in sine, square, and triangle wave audio signals to instantly turn your phone into a versatile sound transmitter. - Fun Dynamic Frequency Sweeps: Supports fixed frequency playback alongside single, loop, or round-trip dynamic sweep modes. Easily test speaker bass depth or fine-tune audio gear. - Precise Gesture Tuning: Use smooth swipe gestures for silky, precise micro-adjustments to both output frequency and volume gain. Common Use Cases - Measure room insulation or ambient noise decibels at home or in the office. - Test newly purchased headphones or speakers to see if the bass is deep enough and the treble is crisp. - Assist with instrument tuning by viewing the exact sound pitch and frequency. - Explore fun acoustics by playing curious sweep tones with the signal generator.

Capture ideas, interviews, instruments, and field sound with control over the file you create. PCM Recorder shows a live waveform and input level while recording, along with elapsed time and an estimate of the recording time remaining. Choose from the formats and sample rates supported by your current microphone and audio route. RECORD WITH CONTROL • WAV, CAF, AIFF, and space-saving M4A output • 16-bit, 24-bit, 32-bit integer, and 32-bit float PCM options where supported • Mono or stereo recording based on the connected input • Built-in, wired, USB, and Bluetooth microphone selection • Microphone position, polar pattern, and hardware input gain controls when available KEEP THE TAKE SAFE • Background recording and a Live Activity for quick status checks • Free-space monitoring while you record • Safe stopping before storage or WAV container limits are reached • Recovery support for interrupted recordings EDIT NON-DESTRUCTIVELY • Visual waveform editor with precise trim points • Level adjustment, normalization, fade in, and fade out • Preview the current edit before export • Export an edited copy while preserving the original • Split a take or join compatible recordings YOUR FILES, YOUR WORKFLOW Recordings stay in the app's local storage unless you choose to share them. Rename and organize takes, share the original file, or access recordings from the Files app. No account is required. PCM Recorder is supported by advertising. EULA https://www.apple.com/legal/internet-services/itunes/dev/stdeula/