Overview
- The 57-page submission asserts the files were later processed or manipulated, pointing to sampling and bitrate inconsistencies, coding-time offsets, and identical modification dates indicative of export or reassembly.
- Defence experts highlight traces of iOS 12.2 and 13.1.2 in audios dated April 2019, arguing this is technically impossible and proves post-creation handling, alongside missing original hash values and acquisition records.
- The report argues the recordings lack the quality needed for reliable biometric speaker identification, citing low signal-to-noise ratios, frequency loss, acoustic overlaps and tests using specialized voice-analysis software.
- These claims directly contest a September Criminalística finding that detected no manipulation and judged the audios more likely authentic, a conclusion that supported Cerdán’s July provisional imprisonment.
- A new challenge to the defence filing notes it is signed by a lawyer and a private detective rather than accredited computer engineers, which critics say could diminish its evidentiary weight under Spanish procedure.