Question: Gawain and Otello are both what type of performance?

<P0-S0>  The story is based on the Middle English romance "Sir Gawain and the Green Knight". <P0-S1>  The opera was a commission from the Royal Opera House, London, where it was first performed on 30 May 1991. <P0-S2> Gawain is an opera with music by Harrison Birtwistle to a libretto by David Harsent. <P0-S3>  Rhian Samuel has published a detailed analysis of the opera. <P0-S4>  Birtwistle revised it in 1994, and the premiere of the revised version was given at the Royal Opera House on 20 April 1994. <SEP> <P1-S0>  The role of Iago is reduced to some degree, and it is much less diabolical than in the original or in Verdi's "Otello" of 1887. <P1-S1>  In further contrast, the role of Rodrigo, of subsidiary importance in Shakespeare and Verdi, is very prominent in Rossini's version and is assigned some of the most difficult and brilliant music. <P1-S2>  The roles of Otello, Iago, and Rodrigo are all composed for the tenor voice. <P1-S3> The opera deviates heavily from Shakespeare's version not only in that it takes place in Venice and not on Cyprus, but also in that the whole dramatic conflict develops in a different manner. <SEP> <P2-S0> The megahertz myth, or less commonly the gigahertz myth, refers to the misconception of only using clock rate (for example measured in megahertz or gigahertz) to compare the performance of different microprocessors. <P2-S1>  While clock rates are a valid way of comparing the performance of different speeds of the same model and type of processor, other factors such as pipeline depth and instruction sets can greatly affect the performance when considering different processors. <P2-S2>  For example, one processor may take two clock cycles to add two numbers and another clock cycle to multiply by a third number, whereas another processor may do the same calculation in two clock cycles. <P2-S3>  Comparisons between different types of processors are difficult because performance varies depending on the type of task. <P2-S4>  A benchmark is a more thorough way of measuring and comparing computer performance. <SEP> <P3-S0> mm'-type filters, also called double-m-derived filters, are a type of electronic filter designed using the image method. <P3-S1>  They were patented by Otto Zobel in 1932. <P3-S2>  Like the m-type filter from which it is derived, the mm'-type filter type was intended to provide an improved impedance match into the filter termination impedances and originally arose in connection with telephone frequency division multiplexing. <P3-S3>  The filter has a similar transfer function to the m-type, having the same advantage of rapid cut-off, but the input impedance remains much more nearly constant if suitable parameters are chosen. <P3-S4>  In fact, the cut-off performance is better for the mm'-type if like-for-like impedance matching are compared rather than like-for-like transfer function. <P3-S5>  It also has the same drawback of a rising response in the stopband as the m-type. <P3-S6>  However, its main disadvantage is its much increased complexity which is the chief reason its use never became widespread. <P3-S7>  It was only ever intended to be used as the end sections of composite filters, the rest of the filter being made up of other sections such as k-type and m-type sections.