Audio log (Halo 4)

There are quite a number of 'audio logs' in Halo 4, most of them are located at Ivanoff Station.

However, there do appear to be level specific logs as well.

Requiem
Location: In a wreckage near the beginning of the level. It is near the wreckage the SAW is found.

Transcript:

Unknown voice: Catherine Halsey Research excerpt, 11 February 2550.

Halsey: A interesting factor here isn't that H-1 disabled the viral termination code I had implanted in her matrix. These metrics imply its success wasn't just unlikely, but that even the acceptance of the 7-year life cycle estimates may not apply.

Halsey: Thus far, I've determined that the unique circumstances of her creation have triggered what I can only refer to as a recessive variant in the A.I. seed.

Halsey: As her architect, I'm currently at a loss as to the origin of the development of this rogue element. Very curious.