Howard will lobby for international DAB roll-out as the best digital platform for radio and alternative to AM and FM broadcasts.
The news comes as Rajar, the UK radio audience measurement body, released figures showing listening hours via DAB has grown 165% in the past year, overtaking the combined listening hours via DTV and the internet.
The number of people listening to radio via digital platforms has grown by 4.7m or 25% in the past year, revealed the Listening via Platform survey. Listening hours via DTV grew 42%, and via the internet by 84%.
When equated to all radio listening, Rajar said 10.5% of all listening in August and September 2005 was via digital platforms, compared to 5.9% last year.
Rajar said 10.5% of UK homes own DAB sets, compared with 4.5% of homes in September last year.
Rajar managing director Sally de la Bedoyere said the results were encouraging reading for the digital radio industry in the UK.
"Clearly, this is a trend which is gathering pace as access to digital receivers increases and it is one Rajar will continue to monitor," she said.