Audio File Validation

The complete analysis takes between 5 and 7 business days, depending on the audio length and case complexity. In urgent situations, we can expedite the process.

Send the original audio without editing or re-encoding, in the original recording format (WAV, M4A, MP3, etc.). Use secure transfer platforms. DO NOT send it via WhatsApp as it compresses the audio.

Yes, through biometric voice analysis we can compare the recording with known voice samples and determine if they match with a high degree of probability.

Yes, we use specialized technology to detect AI-cloned voices. We analyze breathing patterns, micro-pauses, digital artifacts, and other characteristics that reveal synthetic voices.

Yes, through spectral and metadata analysis we can identify cuts, insertions, deletions, speed changes, and other manipulations.

Yes, our reports have full legal validity. Forensic experts can ratify the analysis in court and technically explain the conclusions.

Yes, we can perform forensic audio enhancement by removing background noise and improving intelligibility, always preserving the integrity of the original evidence.

The price depends on the audio length and complexity of the requested analysis. Contact us for a personalized quote with no obligation.

A spectrogram is a visual representation of the frequency spectrum of audio over time. It allows visual identification of anomalous patterns, cuts, insertions, acoustic environment changes, and other manipulations that are imperceptible to the human ear. It is a fundamental tool in audio forensic analysis.

Yes, our audio forensic experts are prepared to appear in court, ratify the expert report, play the analyzed recordings, explain the technical methodology applied, and answer questions from the court and parties. Their experience in acoustic forensics guarantees technical credibility.

We analyze all common formats: WAV, MP3, M4A, AAC, FLAC, OGG, WMA, AMR, OPUS, and many others. We also work with proprietary formats from specific recorders, telephony systems, messaging applications, and video surveillance recordings. Uncompressed formats (WAV, FLAC) are ideal for forensic analysis.

Yes, we analyze phone call recordings regardless of origin: landline, mobile, VoIP, Skype, WhatsApp, recording applications, PBX systems, etc. We can determine if the recording is continuous, if it has been edited, and perform biometric analysis of the participating voices.

There is no technical duration limit. We analyze recordings from a few seconds to complete hours of audio (extended conversations, surveillance, interrogations, conferences). Analysis time and price are adjusted proportionally to the material length. For very long audio files, we can focus the analysis on specific segments of interest.

It depends on several factors: whether you have physical access to the device where it was deleted, the time elapsed, and whether new data has been written over that space. In some cases, we can perform forensic recovery of deleted data from the phone's internal storage. WhatsApp does not store deleted audio on its servers.

The report includes: metadata analysis (date, time, recording device, software), complete frequency spectrogram, temporal waveform analysis, integrity verification through SHA-256 hashes, edit detection (cuts, insertions, speed changes), biometric voice analysis when applicable, acoustic environment evaluation, text transcription when relevant, precise timestamp identification of each finding, well-founded technical conclusions, and annexes with spectral graphs. All documented according to ISO/IEC 27037 computer forensics standards.