What If a Witness Records a Statement Against His Own Interest?

Let's say Raman a 35-year-old businessman is a key witness in a criminal case. During the investigation, he records a statement confessing to the crime, but later on, he changes his stance and denies committing the offense. Now, the prosecution is in possession of the initial recorded statement. Under Section 162 (1) of the Indian Evidence Act, 1872, can Raman's initial statement be used against him? What if it was voluntarily recorded? Would this recorded statement still be admissible as evidence?