WOLFSON Microelectronics owner Cirrus Logic has reported a 36 per cent increase in quarterly revenue to $298.6 million.

The California business said the deal for Edinburgh based semiconductor maker Wolfson, completed on August 21 last year, had contributed $30.8m of sales in the three months to December 27.

Cirrus, which counts Apple as its largest customer, said the additional uplift in revenue was through greater volumes of portable audio products.

For the first nine months of its financial year Cirrus is running 17 per cent up with $661.4m of net sales so far, compared to $564.7m.

Within that portable audio is said to be 18 per cent up with non-portable audio and other products 14 per cent ahead.

Wolfson's portable audio products are used by major electronics brands in everything from smartphones and gaming devices to voice recognition technology for cars and hoovers.

Cirrus reported net income for the three months of $22.7m. That was up from $852,000 in the previous quarter but down from the $41.5m recorded in the same period of 2013.

Jason Rhode , president and chief executive officer of Cirrus, described the most recent three months as an "excellent quarter" and said: "We are very excited about the outlook for Cirrus Logic.

"We expect to deliver year-over-year revenue growth in [the fourth quarter] and [the 2016 financial year] driven by a continued strong market for our innovative audio and voice products, a compelling lineup of new product introductions, and significantly improved contributions from the Wolfson acquisition."