This paper proposes a robust and accurate F0 estimation method for noisy speech. This method uses two different principles: (1) an F0 estimation based on periodicity and harmonicity of instantaneous amplitude for a robust estimation in noisy environments, and (2) TEMPO2 proposed by Kawahara et al. as an accurate estimation method. The proposed method also uses a comb filter with controllable pass-bands to combine the two estimation methods. Simulations were carried out to estimate F0s from real speech in noisy environments and to compare the proposed method with other methods. The results showed that this method can not only estimate F0s for clean speech with similar accuracy as TEMPO2 but also robustly estimate F0s from noisy speech in comparison with the other method such as TEMPO2 and cepstrum method.