Biquadia: Audio & DSP Lab

Precision Audio & DSP Toolkit

Free · In‑App Purchases · Designed for iPad. Not verified for macOS.

Professional DSP, neural speech isolation, true MVDR beamforming, and spatial audio right in your pocket. Biquadia is an acoustic engineering and audio analysis lab designed for audio engineers, researchers, and sound designers. It brings real-time DSP, acoustic measurement, spectral visualization, and spatial analysis directly to iOS and iPadOS. [IN-APP PURCHASE DISCLOSURE] Biquadia includes powerful core features completely free of charge. Advanced features marked below with [Requires In-App Purchase] require a Biquadia Pro subscription (Monthly with a 7-day free trial) or a Lifetime Purchase. FREE FEATURES INCLUDED: • DSP Lab: Real-time FIR/IIR filtering, parametric EQ, dynamics processing, live oscilloscope, and FFT spectrum analyzer. • Analysis Lab: High-resolution FFT, pitch tracking, formant estimation, and real-time STFT spectrogram. • Measurement Lab: Multi-sweep acoustic measurements, impulse response capture, and calibrated SPL analysis. • Psychoacoustics & Codec Lab: Codec difference spectrograms, perceptual masking thresholds, and Bark/Mel scale overlays. • Audio FX & Signal Generator: Sine, frequency sweeps, pink/white noise generator, plus chorus, drive, and delay visualization. • System & Audio Hub: System performance diagnostics, multi-channel I/O mixer, and live signal routing meters. PRO FEATURES [REQUIRES IN-APP PURCHASE]: • Target-Speaker Extraction [Requires In-App Purchase]: Experimental on-device Core ML model that isolates one enrolled voice from a mixture using its speaker embedding — a technology demonstration, not a general-purpose noise remover. • Advanced Array Processing [Requires In-App Purchase]: Covariance-based MVDR beamforming for multi-microphone arrays (up to 32 channels). • Ambisonics & Spatial Audio [Requires In-App Purchase]: First-Order Ambisonics (FOA) encoding, 3D scene rotation, and binaural room impulse response decoding. • Measurement Data Export [Requires In-App Purchase]: CSV export of per-band THD+N/SNR measurement data. IN-APP PURCHASE OPTIONS: - Biquadia Pro Monthly: $4.99/month (Auto-renewable subscription with a 7-day free trial). - Biquadia Pro Lifetime: $79.99 (One-time non-consumable purchase). Biquadia processes audio entirely on-device. It has no developer-operated backend, telemetry, or audio upload. Network activity is limited strictly to Apple StoreKit and user-selected external links. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

Ratings & Reviews

  • This app hasn’t received enough ratings or reviews to display an overview.

The developer, Maker Portal LLC, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .

  • Data Not Collected

    The developer does not collect any data from this app.

    Privacy practices may vary, for example, based on the features you use or your age. Learn More

    Accessibility

    The developer has not yet indicated which accessibility features this app supports. Learn More

    Information

    Seller
    Maker Portal LLC
    Size
    71.4 MB
    Category
    Utilities
    Compatibility
    Requires iOS 17.0 or later.
    • iPhone
      Requires iOS 17.0 or later.
    • iPad
      Requires iPadOS 17.0 or later.
    • Mac
      Requires macOS 14.0 or later and a Mac with Apple M1 chip or later.
    • Apple Vision
      Requires visionOS 1.0 or later.
    Languages
    English
    Age Rating
    4+
    In-App Purchases
    Yes
    • Biquadia Pro Monthly $4.99
    • Biquadia Pro Lifetime $79.99
    • Learn More
    Copyright
    © Maker Portal LLC
  • Developer Website
  • Privacy Policy

    • More by Maker Portal LLC

    You Might Also Like