Animal Bioacoustics Analysis & Visualization

Project Title

Scientific Animal Bioacoustic Analysis, Audio Cleaning & 3D Visualization

Project Overview

I am looking for an experienced bioacoustics specialist/audio restoration expert to analyse 8 animal vocalization recordings representing different behavioural contexts. The recordings are field-based and contain varying levels of background noise.

The goal is to produce scientifically reliable cleaned audio, publication-quality acoustic analyses and presentation-quality 3D audio visualizations, while preserving the original biological signal.

1. Audio Cleaning & Restoration

For all 8 recordings:

Background-noise and unwanted environmental noise reduction
Wind, hiss, hum, clicks and handling-noise reduction where possible
Appropriate filtering and normalization
Improved signal-to-noise ratio
Preservation of the original frequency and temporal characteristics
Export of both original and cleaned WAV files

Please document the major processing steps and parameters.

Important: Noise reduction must not artificially alter, remove or create important biological acoustic features.

2. Scientific Bioacoustic Analysis

For each behavioural call, analyse as many scientifically relevant parameters as the recording quality allows, including:

Waveform and call duration
Number of pulses/notes
Minimum and maximum frequency
Peak/dominant frequency
Fundamental frequency (F0), where measurable
Bandwidth
Harmonics/overtones
Frequency and amplitude modulation
Spectral energy distribution
Frequency contour
Amplitude envelope
Inter-call interval, where applicable

Please generate high-resolution spectrograms and power/frequency spectra using consistent settings across all recordings.

3. Publication-Quality Figures

I require figures suitable for a peer-reviewed scientific paper, including:

Waveforms
Spectrograms
Power/frequency spectra
F0/frequency contours where applicable
Amplitude envelopes
Comparative plots of acoustic parameters

Figures should have clear labels, units, consistent formatting and 300–600 dpi resolution. Vector formats such as PDF/SVG are preferred where possible.

4. Comparative & Statistical Analysis

Please prepare a consolidated dataset containing the main acoustic parameters for all 8 calls.

Where the sample size supports it, appropriate analyses may include:

Descriptive statistics
ANOVA or Kruskal–Wallis tests
Post-hoc comparisons
PCA
Cluster analysis
Correlation analysis

Do not apply statistical tests where the sample size or data structure is insufficient.

5. 3D Audio Visualization & Video

For presentation and research communication, I would like the cleaned recordings converted into professional 3D spectrogram/frequency visualizations, similar to this reference:

https://www.youtube.com/shorts/jtNGnkscgds

The visualization should dynamically respond to the animal's sound and may include:

Audio → Waveform → Spectrogram → 3D frequency landscape → Acoustic parameters

For each of the 8 calls, I would like a high-quality synchronized video, preferably 1080p or 4K, with behavioural category and frequency scale clearly displayed.

These videos will be used for PhD presentations, scientific conferences, seminars, research videos and wildlife communication.

6. Scientific Documentation

Please provide a brief methodology/report covering:

Software used
Noise-reduction procedure
Filters and processing parameters
Sampling rate and audio specifications
Spectrogram/FFT settings
Acoustic variables measured
Statistical methods
Limitations caused by background noise
7. Final Deliverables

I expect:

8 original audio files
8 cleaned/restored WAV files
Publication-quality waveforms and spectrograms
Frequency/power spectra and relevant acoustic plots
Comparative acoustic dataset in Excel/CSV
Statistical/comparative figures where appropriate
3D audio visualizations
8 presentation-quality video renders
Methodology/technical documentation
Source files/scripts where applicable
Ideal Freelancer

Experience in bioacoustics, wildlife/mammalian vocalizations, audio restoration and scientific visualization is strongly preferred.

Relevant experience with Raven Pro, Praat, R, Python, Kaleidoscope, MATLAB or similar tools would be an advantage.

Please provide examples of previous wildlife bioacoustic analyses, spectrograms, scientific figures or 3D audio visualizations, along with your proposed workflow, estimated timeline and project cost.

This is a scientific research project, not simply an audio-editing job. Biological accuracy and preservation of the original acoustic information are the highest priorities.