alongwith documents, if any, as per letter dated 09/10/2015 issued by the Superintendent of Police, CBI-ACB. The learned counsel for petitioners took me through the order passed on third application at Ex.117 moved by petitioners for supply of documents listed at Sr.No.7(b) of the application for production of documents and contended that the prosecution is relying on worksheets prepared by the CFSL for auditory analysis by specimen voices and questioned voices, samples of evidence of Sumitra Banerji and Subrato Banerji. According to the learned counsel for the petitioners, supply of these worksheets to petitioners/accused is essential for their proper defence as the same would be required to cross examine the expert of CFSL on Forensic Voice Examination Report. The learned counsel for the petitioners/accused placed reliance on judgment of Gujarat High Court in the case of Pravinkumar Lalchand Shah, versus, The State of Gujarat and another, reported in 1981 G.L.H. 373 , by pointing out that the Gujarat High Court has held that enlarged photographs of handwriting are necessary in order to appreciate evidence of handwriting expert and such documents are required