K and R has over 41 years of experience (at KnR.net) in commercial music, audio, staging, electronics design, acoustics, photography, radio telephony (W8KNR), film, television, security systems and video gives me an unparalleled edge. Local, State, Federal and International courts use my forensic services from the recovery of broken device media and Audio-Video-Photo restorations to complex spectral graphic voice identification, cell phone data examination, and courtroom testimony for both plaintiff and defense.